Cross-Site Scripting
Contents
Description
- Cross-site scripting is a vulnerability rooted in the way HTML content is generated and interpreted by client browsers.
- These vulnerabilities are usually found in Web applications and allow attackers to inject HTML or client-side scripting into input of a web-based application in the hope (or with the knowledge) that the input the attacker provided will be returned unparsed.
- This basic vulnerability, depending on how it's exploited, can be used for a multitude of purposes. The number of these seems to grow all the time, but some of these are:
- Cookie theft
- Session ID theft
- Defacing a Web site
- Limited execution of arbitrary code on the victim's machine, particularly, if it's a trusted Web site or a Web-driven client application. or even if it is combined with an unsafe ActiveX control.
- Manipulating the DOM (Document Object Model)
- Cookie poisoning
- Changing user settings
- Malicious scripting can he created using a variety of languages or technologies, such as:
- JavaScript
- VBScript
- ActiveX
- HTML
- Flash
There are three types of cross-site scripting generally recognized
Nonpersistent or Reflected
- This is the most common type of cross-site scripting vulnerability by far — a vulnerability where data from a Web client is immediately used by the server to generate a page to return to the user.
- A classic example of this is encountered in search engines: If you search for a string that includes some HTML. special characters. often search string will be redisplayed on the results page to indicate what was searched for, or the search terms will at least appear in a new search text box for easier editing. If all occurrences of the search term are not HTML entity-encoded, an XSS vulnerability will exist because that redisplayed search string would then contain the client-side script that your browser would execute.
Persistent or Stored
- This is not the most common type of attack, but it is the most powerful. This vulnerability occurs when data provided to a Web application by an attacker is first stored persistently on the server, and then later it's displayed to users in a Web page without being HTML-encoded.
- One of the reasons this is a more serious or significant vulnerability is that an attacker can post an attack once and can potentially affect a large number of users without having to resort to social engineering. The attacker also doesn't need to use the Web application itself to exploit this vulnerability. Any data received by the Web application by other means, including e-mail, system logs, etc.. is capable of exploiting these vulnerabilities.
DOM-Based or 'Local'
- This cross-site scripting vulnerability is one that is focused on the DOM (Document Object Model ).When JavaScript is executed. the browser sends several objects that represent the DOM hack to JavaScript.
- The document object contains multiple other objects, all populated from the browsers point of view — which is important to remember.
- Basically, this type of XSS modifies the DOM itself to take advantage of any Web pages that then use the DOM information.
Example
- An example of this would be the document.URL that contains the URL the browser navigated to, not the URI extracted from the HTML body.
- This means that if a hyperlink is sent that contains scripting as part of the URL, and the page referenced uses that document.URL value in a dynamic page, the script embedded in the URL is executed.
- Some DOM objects that are at risk:
- Document.URL
- Document.URLEncoded
- Document location (and many of its properties)
- Document.referrer
- Window.location (and many of its properties)
Anatomy of an Exploit
- Nonpersistent or Reflected Exploit:
- Here, the attacker discovers a Web site that has an XSS vulnerability by entering a string such as “<test>” to see if the string is reflected back with the greater-than and less-than symbols unencoded.
- Once XSS vulnerability is found, the attacker crafts a URL that Will exploit the vulnerability, and he sends the crafted URL to another user of the site, generally as a spoofed e-mail.
- When the potential victim visits the site using the link contained in the e-mail, the malicious script contained in the crafted URL is executed by the potential victim's browser as if it came from the Web site with the XSS vulnerability. The script steals whatever sensitive information It can and sends the data to the attacker.
- Persistent or Stored Exploit
- This attack also requires that the attacker discover a Web site allowing users to post information for retrieval by other users in something other than plaintext (i.e., HTML-encoded, etc.). For HTML encoding of messages to be available, the browser reading the post or data has to process the HTML.
- The attacker can also test this by posting data to this Web site, using a test string to see if the user input is filtered or otherwise encoded.
- Once the attacker finds that the site has an exploitable XSS vulnerability the attacker posts a message designed to attract the maximum that possible (so it's generally controversial or even obnoxious), and in message is embedded the code to exploit XSS vulnerability.
- Now, whenever the posted message is viewed, the session cookies other credentials are sent to the attacker's Web server.
- DOM-Based or Local
- Here, the attacker must know of a Web site with a page that uses part of the DOM not wholly under the control of the server-side page.
- Once the attacker finds a page that parses the URL, or similarly uses information in the DOM to provide data for client-side logic, the attacker can craft a URL to take advantage of that vulnerability and e-mail or otherwise distribute the URL to potential victims.
- When the potential victim receives the link and clicks on it, the malicious code is exploited; the vulnerable Web page is returned from the server and may now run a variety of commands with whatever privileges the user has on the computer it is running on.
Real-World Examples
Bugzilla DOM-Based XSS
- In December 2004, a vulnerability was reported in Bugzilla' (The Mozilla Foundation, California) where, if an internal error was encountered, an error page used JavaScript to write the URL (using document.location) to the Web page without filtering or encoding it. This would allow someone to force an error and inject JavaScript code.
- The fix for this was to encode the special characters in the document.location string before it is written to the page. More details and some sample codes are available at https://bugzillamozilla.org/show_bug.cgi?id=272620.
PayPal XSS
- In June 2006, PayPal6 (EBay, Inc., San Jose, California) was hit by a complex attack that used a combination of an e-mail phishing that asked the users to click on a link leading to a URL on the real PayPal Web site. The link to this URL utilized cross-site scripting to present the users with some text informing them that their account is disabled because of suspicions that it had been compromised and that they would be redirected to a resolution center. Then the users were indeed redirected but to a trap site in South Korea.
- This trap site was basically a phishing site. The users were asked for their PayPal login details, and even more sensitive information such as Social Security number, bank account numbers, etc.
- One of the most interesting facts about this attack is that on the initial PayPal page the user is directed to is an SSL page; the valid 256-bit SS certificate to confirm it belongs to PayPal.
Microsoft Passport
- In October 2001, a security researcher, Marc Slemko, conducted some investigations into the integrated Passport'“ (Microsoft Corporation. Redmond, Washington) system and its component services and brought one vulnerability to light: using Hotmail's HTML filtering and cross-site scripting can expose the user's Passport data.
- In this case, an e-mail was sent to a Hotmail user that included a tag, starting with “<_img.” Hotmail thinks this is the start of an Fine tag and treats the information inside as attributes but Internet Explorer (IE) doesn’t recognize any tag starting with an invalid character, so it just continue as if the tag isn't there.
- Part of the problem is that IE is performing what is called a “white list” check for the tag. If the tag is not specifically considered to be invalid, then it is invalid by default. Hotmail, however, is performing what is checked . a 'black list“ check. If the tag is not specifically considered to be invalid then it is valid by default.
- This Hotmail issue is merely an easy way to got around the necessarily of sending some social engineering e-mails to get the user to click on the link— it's not actually a required part of the vulnerability demonstration.
- We recall that since the user is doing this through a Hotmail account, passport has already been logged into and a Passport cookie has been issued.
- Once the HTML exploit pages is loaded, its opens two frames, one of these connect to a page in the passport’s secure path to enable the attacker to steal passport cookie.
- The second frame exploit an XSS vulnerability in Passport: if you are already logged in, a page is returned including the unencoded passed in information — in this case- executed by JavaScript on the attacker's server. This JavaScript then proceeds to capture the user‘s Passport cookie and sends the cookie off to CGI script that captures them.
MySpace XSS Worm
- The first incident of an XSS worm occurred in late 2005 when a MySpace(MySpace, Inc.) user figured out a way to increase his friend's list by first creating a script in his user profile that overcame the MySpace restriction against JavaScript. It achieved this by splitting it between two lines and then placing this script code within a cascading style sheet, exposing a leniency in IE.
- Then, the attacker used a JavaScript object to load a MySpace URL that would automatically invite the attacker as a friend, and later as a “hero,” into the visitor's own profile.
- Next, he turned around and embedded this script into each of his visitor's profiles, so that the code continued to propagate to anyone who viewed their profiles.
- By 9:30 that night, there were over 1 million requests, and less than an hour later the entire MySpace site had to be taken offline while the worm was removed from all user profiles.
Test Techniques
- One of the difficulties in testing cross-site scripting is that the more advanced efforts often involve encoding some of the telltale signs of cross site scripting exploits in any one of a number of formats.
- Following table gives examples of texts that can represent the <script> tag in HTML.
- If your application accepts UTF-8 characters, this becomes even more complex because you have multiple ways to encode each character. If this is the case for your application, it's a strong argument for deleting characters that are not explicitly safe and allowable.
Question All Filtering and Encoding
- A valuable exercise you can do before actually starting the test is to ask several questions about every field in your product:
- Does this field have a limited set of expected input?
- Is there filtering or error checking in place to enforce that only input that meets the requirements of the field is passed through?
- If your product accepts UTF-8 characters, is there filtering in place to delete all characters not explicitly safe?
- There may be reasons that input cannot be as severely filtered as you might wish, but the fields should all be filtered as closely as possible without impairing necessary functionality.
- In addition, there is a set of minimum characters that should always he encoded into their literal, printable equivalents. If this is done. any script code that makes it into the system can't be output again unless it's converted to safe formatting. This list is shown in following table.
Black-Box Testing Basic Script Test
- The best way to start testing for cross-site vulnerabilities is to test every input field you can find with a simple test script:
- <script>alert('XSS Vulnerability Found')</script>
- <img xsstest=javascript:alert('XSS Vulnerability Found')>
- &(alert('XSS Vulnerability Found'));
- If the message box displays “XSS Vulnerability Found,” the input field you are testing has an XSS vulnerability. If it doesn't display the phrase but the HTML page retuned displays incorrectly, the component may still be vulnerable and should be further tested.
Black-Box Testing Encoding Test
- Now for each visible variable, submit the following string:
11; ! —”<XSS_Check>=&{()} On the page that is returned, search for the string “<XSS_Check>.”
- If you can find that test string in the retuned page, it's likely that the component has an XSS vulnerability.
- If it's displayed literally (including the greater than or less than characters at any point), there is a definite XSS vulnerability.
- If only the phrase “XSS_Check” is displayed but the greater-than and less-than symbols have been stripped away completely, the component is not vulnerable.
- If there was some encoding done and you see something such as “<XSS_Check>” then a vulnerability may still exist.
Black-Box Testing Returned Code Examination
- Now examine the other characters that were input around the test string to see what characters are filtered or encoded. This will indicate if the component may still be vulnerable.
- Carefully examine the returned HTML page to see if you can identify what string an attacker could use to break out of the HTML code or sequence surrounding the test string. If these codes exist in an unfiltered form in the previous step it is very likely that the component is vulnerable.
White-Box Testing
- The steps for black-box testing are still needed. but if you are doing white-box testing , you can follow the input string through the code to see wherever it may be used or returned to the client browser.
- Some of these places may not be obvious or may be difficult to find with black box testing, especially pages that are not pan of the well-known normal code path. This includes error pages, and the like.
- There are two other tests that should he done if you are conducting white-box testing:
- Hidden Fields
- Repeat the set of black-box tests on every hidden field, the ones that are not normally editable. This may require the use of automation, a custom tool, or one of the proxy servers available commercially. You need to be able to edit HTTP requests between client and server.
- GET Versus POST
- If particular components are submitting data via an HTTP GET request try turning the submission into an HTTP POST request for any components if the results of the prior testing indicate the possibility of an XSS vulnerability.
External links
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Subtitle


Startingkdbplus/ipc
Contents |
3. Q IPC
3.1 Overview
A production kdb+ system may have several q processes, possibly on several machines. These communicate via tcp/ip. Any q process can communicate with any other q process as long as it is accessible on the network and is listening for connections.
- a server process listens for connections and processes any requests
- a client process initiates the connection and sends commands to be executed
Client and server can be on the same machine or on different machines. A process can be both a client and a server.
A communication can be synchronous (wait for a result to be returned) or asynchronous (no wait and no result returned).
3.2 Initialize Server
A q server is initialized by specifying the port to listen on, with either a command line parameter or a session command:
..$ q -p 5001 / command line q)\p 5001 / session command
3.3 Communication Handle
A communication handle is a symbol that starts with : and has the form:
`:[server]:port
where the server is optional, and port is a port number. The server need not be given if on the same machine. Examples:
`::5001 / server on same machine as client `:genie:5001 / server on machine genie `:<IP_ADDRESS>:5001 / server on given IP address `:www.example.com:5001 / server at www.example.com
The function hopen starts a connection, and returns an integer connection handle. This handle is used for all subsequent client requests. For example:
q)h:hopen `::5001 q)h "3?20" 1 12 9 q)hclose h
3.4 Synchronous/Asynchronous
Where the connection handle is used as defined (it will be a positive integer), the client request is synchronous. In this case, the client waits for the result from the server before continuing execution. The result from the server is the result of the client request.
Where the negative of the connection handle is used, the client request is asynchronous. In this case, the request is sent to the server, but the client does not wait or get a result from the server. This is done when a result is not required by the client.
For example:
q)h:hopen `::5001 q)(neg h) "a:3?20" / send asynchronously, no result q)(neg h) "a" / again no result q)h "a" / synchronous, with result 0 17 14
3.5 Message Formats
There are two message formats:
- a string containing any q expression to be executed on the server
- a list (function; arg1; arg2; ...) where the function is to be applied with the given arguments
For example:
q)h "1 2 3 +/ 10 20" / send q expression 31 32 33 q)h (+/;1 2 3;10 20) / send function and its arguments 31 32 33
3.6 Http Connections
A qserver can also be accessed via http. To try this, run a q server on your machine with port 5001. Then, load a web browser, and go to http://localhost:5001. You can now see the names defined in the base context.
Prev: 2. Q Language Next: 4. Kdb+ Tables


[gecode-users] Bugs in Gecode/J
Mikael Zayenz Lagerkvist
zayenz at gmail.com
Tue Apr 15 11:25:16 CEST 2008
On Tue, Apr 15, 2008 at 11:11 AM, Malcolm Ryan <malcolmr at cse.unsw.edu.au> wrote:
>
> On 15/04/2008, at 6:37 PM, Malcolm Ryan wrote:
> > I'm in the process of compiling Gecode on another (linux) machine.
> > I'll run it there and see what happens.
>
> I've made gecode-2.1.1 without any problems, but when I try to
> configure gecodej-2.1.1, I get:
>
> [malcolmr at wagner gecodej-2.1.1]$ ./configure
> ...
> configure: error: cannot find java include files
This means that configure could not find the include-files needed to
use JNI. Make sure that you have them (i.e., you have a JDK installed,
not only a JRE), and that confgure can find your installation.
Configure will search for the include dir relative to your javac
executable.
Cheers,
Mikael
--
Mikael Zayenz Lagerkvist, http://www.ict.kth.se/~zayenz/
More information about the gecode-users
mailing list


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Getting Started¶
The microbot is developed by Kitronik.
They have resources for developing programs for the robot using Make Code. You can follow their tutorials for this.
Developing in Python¶
To develop for the microbot in Python, we first need to add some of our own code. First copy the below into the Python editor.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | # Add your Python code here. E.g.
from microbit import *
import neopixel
import random
class MicroBot:
"""
A simple class for controlling Kitronic :MOVE mini.
"""
LEFT_WHEEL = pin2
RIGHT_WHEEL = pin1
def __init__(self):
self.min_us = 1000
self.max_us = 2000
self.us = 0
self.freq = 50
self.angle = 180
self.analog_period = 0
analog_period = round((1/self.freq) * 1000) # hertz to miliseconds
MicroBot.LEFT_WHEEL.set_analog_period(analog_period)
MicroBot.RIGHT_WHEEL.set_analog_period(analog_period)
self.np = neopixel.NeoPixel(pin0, 5)
def _write_us(self, pin, us):
us = min(self.max_us, max(self.min_us, us))
duty = round(us * 1024 * self.freq // 1000000)
pin.write_analog(duty)
def _write_angle(self, pin, degrees=None):
degrees = degrees % 360
total_range = self.max_us - self.min_us
us = self.min_us + total_range * degrees // self.angle
self._write_us(pin, us)
def _speed_to_angle(self, speed):
"""
Continuous rotation servos go from:
* 0 = Full speed one way
* 90 = Stop
* 180 = Full speed the other way
So we have to handle this
"""
if speed > 0:
return 90 + (90 * speed)
else:
return 90 - (-90 * speed)
def set_wheel_speed(self, wheel, speed):
"""
Set the speed of a wheel. Speed is between -0.5 and 0.5 with 0 being stopped
"""
if wheel == MicroBot.RIGHT_WHEEL:
speed = speed * -1.0
if speed != 0:
self._write_angle(wheel, self._speed_to_angle(speed))
else:
self.stop_wheel(wheel)
def stop_wheel(self, wheel):
"""
Stops a wheel
"""
wheel.write_digital(0)
def set_light(self, light, red, green, blue):
self.np[light-1] = (red, green, blue)
def show_light(self):
self.np.show()
def main():
pass
main()
|
We don’t have to know much about this block of code for now. It just lets us command the robot.
Movement¶
Now we’ve got some building blocks, we can start by making the little guy move around. Tip the robot on it’s side so it’s right wheel, is in the air.
Now replace the main function we just copied in with the following code.
73 74 75 | def main():
bot = MicroBot()
bot.set_wheel_speed(MicroBot.RIGHT_WHEEL, 0.5)
|
Turn on the power switch and the right wheel should be spinning clockwise, if it isn’t, somethings gone horribly wrong, check your code and then find help.
Once you have that working, try the following.
73 74 75 | def main():
bot = MicroBot()
bot.set_wheel_speed(MicroBot.RIGHT_WHEEL, -0.5)
|
Turn on the power switch and the left wheel should be spinning anticlockwise, if it isn’t, somethings gone horribly wrong, check your code and then find help.
Have a go
Now see if you can make the wheel spin clockwise unless the A button on the microbit is pressed. When this is pressed, the wheel should spin anti-clockwise.
Turn the power back off, and flip the robot onto it’s left wheel. Now try the following.
73 74 75 | def main():
bot = MicroBot()
bot.set_wheel_speed(MicroBot.LEFT_WHEEL, 0.5)
|
Turn on the power switch and the left wheel should be spinning clockwise, if it isn’t, somethings gone horribly wrong, check your code and then find help.
You can also alter the speed the wheel moves at like the following.
73 74 75 | def main():
bot = MicroBot()
bot.set_wheel_speed(MicroBot.LEFT_WHEEL, -0.5)
|
When the power is switched on it should turn more slowly.
Have a go
See if you can make the robot:
Spin on the spot
Move forward slowly
Move backwards slowly


The following paragragh was adapted from the Cactus project's roadmap with the author's permission.
Our users keep inventing better ways and adding new requirements. The downside is that our todo list keeps growing. The upside is that there is plenty of work to go around. If you are interested in participating, send an email on the log4j-dev@ mailing list stating your interest. You'll be promptly enrolled. We're always looking for help! Don't be put off if in the "Volunteer" column already has a person listed. Programming is fun, especially if it is done in a team.
The workplan for log4j 1.3 is not final. It is included here to give you an idea of the future. The items are not listed in any particular order. As always, there is no scheduled release date. The lack of schedule suprises and disturbs some people. Writing good software, like good cooking, takes time. If we make you wait, it is to create a better and more reliable product.
| Label | Comment | Volunteer | Status |
|---|---|---|---|
| test cases |
Writing test cases is not the most sexy part of software development but it is one of the most important. Automated test cases allow us to catch bugs as early is possible. It is strongly recommended to add a new test case with each new feature or component. Existing Perl language based test cases have been
migrated to junit (all-Java)based test
cases. The new tests are placed under the
|
All committers | ongoing effort |
| Extensible XML configuration files |
The DOMConfigurator is complex and not very flexible. It can only deal with elements that the developer knew about at compilation time. This has been an important drawback in the design of several appenders such as the the SMTPAppender and the RollingFileAppenders and its variants. These appenders need to delegate certain task to sub-components which are configured separately. The new JoranConfigurator being created by Ceki will be based on a new 'module' know as Joran, which can convert XML files into other objects based on rules. You can read more abouth Joran here |
Ceki | Significantly progressed |
| Log4j Domains |
This is a very powerful and innovative concept that extends the notion of hierarchical loggers. It will also allow dynamic logging with pin-point accuracy. It was first suggested to me by Scott Stark of JBoss fame. |
Ceki | design board |
| Multiple implementations of Logger |
Based on |
? | vaporware |
| Plugins/Receivers |
A Plugin framework has been designed and implemented. All of the currently developed plugins are "Receivers", which can be thought of as the reverse of an appender; something that accepts LoggingEvents from some external source. This has proven particulaly useful with the log4j ports, with the addition of the XML-based Receivers able to accept LoggingEvents generated from other languages (see "Overture to other programming languages" below) |
All | Significantly progressed |
| Improvements to Chainsaw |
Chainsaw v2 development has now progressed to the point where the main developers of it and many other members of the logging community are using it daily. It's still pre-alpha but only because we keep thinking up things to add. |
Scott Deboy and Paul Smith | Significantly progressed |
| Custom conversion characters in PatternLayout | Users often want to add new conversions characters or override the existing ones. This should be made easy using new configuration directives. This feature would use the extensions to XML configuration language mentioned above. | Ceki | Completed, still testing |
| Overture to other programming languages | It is higly desriable to allow log4j ports in other languages to access log4j services in a language independent way. The use of a standard XML format to represent a LoggingEvent has been established and many of the related logging projects from non-Java languages have begun to support it. In fact, a number of the log4j ports have volunteered to join Apache! Scott Deboy has completed work to create a fex XML-based Receiver classes that can accept logging events from an external source, and 'import' them into the local log4j environment. |
Ceki, Scott Deboy | Significantly Progressed (if not completed) |
| Strategy based rollovers |
Contrary to our own DailyRollingFileAppender, Avalon's
logkit has a nice and clean implementation for rolling
files. See the
Their implementation is based on strategies which are sub-components of appender. We will be able to configure such sub-components with the new XML configuration scripts. |
Ceki | Significantly Progressed |
| Redesign of configure and watch architecture in configurators | This is a very useful feature and the current architecture is not very good.
Contributions have been received by Mark Womack and others. See<EMAIL_ADDRESS><EMAIL_ADDRESS>http://marc.theaimsgroup.com/?t=101010070500002&r=1&w=2 |
Mark Womack | initial implementation |
| Performance improvements to LoggingEvent serialization |
Ole Dalgaard has shown that by implementing the java.io.Externalizable interface instead of java.io.Serializable in the LoggingEvent class, the speed of serialiazation is increased by a factor of 4 or more. |
Ole Dalgaard? | initial implementation |


places
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Enter Your Password:
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About your submission
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Declaration
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I certify that I am entitle to claim payment in accordance with the relevant provisions of my Teams of Service contained in the NHS (Pharmaceutical Services) Regulations 2013 and the Drug Tariff and that the information I have given on this form is correct and complete.
I consent to the disclosure of information from this form to and by the NHS Prescription Services and the NHS Protect for the purpose of verification of this claim and the investigation, prevention, detection and prosecution of fraud or other unlawful activity against for affecting the NHS.


Date methods let you get and set date values (years, months, days, hours, minutes, seconds, milliseconds)
If you have a valid date string, you can use the Date.parse() method to convert it to milliseconds.
Date.parse() returns the number of milliseconds between the date and January 1, 1970:
Date.parse(string) returns milliseconds.
You can use the return value to convert the string to a date object:
Dates can easily be compared.
The following example compares today's date with January 14, 2100:


?Bill
6
7
8
9
10
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v
The
New
York
copyright
reserved
botanical
Garden
ift
No.
this
e#?eiM*N
vs
ILLUSTRATION
IN
Inter
mo
untaim
f
THE
NEW
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BOTANICAL
GARDEN
Plants
of
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Dominican
Republic
14689
Punica
granaturn
L.
Det.
Alain
H.
Liogier,
March
1970.
New
York
Botanical
Garden
lb23524
Shrub,
2.5
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white.
On
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Bro.
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H.
Liogier
¨
Apr.
1969
Supported
by
funds
from
the
National
Science
Foundation.
1623524
Legend -
Level of confidence that token is an accurately-transcribed word
extremely low
very low
low
undetermined
medium
high
very high


Local Logout
Status of Local Logout:
You MUST close your browser to complete the logout process.
You MUST close your browser to complete the logout process.
This service is made possible by SURFnet.


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Release NotesDevelopment Kit for the Java CardTM Platform
|
The development kit tools for the Java CardTM platform
version 2.2.2 require the use of Apache Ant. However, Ant's use in the
tools is not apparent to users. See Development
Kit User's Guide for information on the tools and demos and on
installing Ant. Once you install Ant, Ant's use in
the development kit will not
be apparent because Ant is simply used by the development kit to run
the
tools and demos.
However, the Ant tasks in the Ant tasks bundle are not part of the development kit and their use is optional and unsupported. They are provided simply for Ant users who might find they make using the development kit tools more efficient. Therefore, the use of Ant as described in the Ant Tasks User's Guide is unsupported.
If you do not already have Apache Ant installed on your system,
download version 1.6.2 of Apache Ant from their web site at http://ant.apache.org.
Unzip the package into a directory other than the development kit's
directory. Add Apache
Ant's bin directory to
your system path. See the Development
Kit User's Guide or Ant Tasks
User's Guide for more information on Apache Ant installation and
setup.
The Ant tasks bundle unzips within the binary release
bundle at java_card_kit-2_2_2/ant-tasks.
When you unzip the Ant tasks bundle, the Ant tasks' JavaTM
Archive (JAR) file is extracted into the subdirectory java_card_kit-2_2_2/ant-tasks/lib/jctasks.jar.
The
user's guide for the Ant tasks is extracted into the subdirectory java_card_kit-2_2_2/ant-tasks/docs. For more
information, see Ant Tasks User's
Guide.
NOTE: The use of Ant is supported only for use with the
development kit. The use of Ant outside the development kit is not
supported. The Ant tasks have not been thoroughly tested.
Use of the Ant tasks within the development kit will not be apparent
as you use the tools and demos. However, for documentation on
the unsupported use of the Ant tasks outside the development kit, see
the Ant Tasks
User's Guide in the subdirectory ant-tasks/docs.
The Ant Tasks
User's Guide is provided in HTML and PDF formats. In addition,
the JavadocTM tool files for the Ant tasks
are in
the subdirectory java_card_kit-2_2_2/ant-tasks/docs/html/javadocs.
A compilation of the Javadoc tool files in PDF format is in
the subdirectory java_card_kit-2_2_2/ant-tasks/docs/pdf/ant-tasks-javadocs.pdf.
HTML can be viewed with any CSS-compliant browser, such as:
PDF files can be viewed in your web browser with an appropriate plugin or in Adobe® Acrobat Reader. Most recent browsers include the PDF reader plugin. If your browser does not, you can download the plugin from the browser vendor's web site or the Adobe web site at:
http://www.adobe.com/products/acrobat/readstep.html
Documentation files packaged in the release were current when the release shipped. See the Java Card technology web site at http://java.sun.com/products/javacard/ for any updates.
Visit the product web site at:
http://java.sun.com/products/javacard/
For the most up-to-date information on:


Disney+'s Loki Series In Talks With Yesterday Actor to Co-Star
by L.D. NolanDisney+'s Loki series may be getting a little bigger.
According to Variety, Sophia Di Martino is in talks with Marvel Studios to join Loki. It's unknown at this time who Di Martino would play if she does indeed sign on for the project. Marvel did not comment on the potential casting, so at this time it's possible negotiations will breakdown and the actor will not appear in Loki.
Di Martino has appeared in a variety of films and TV series. She recently played Carol in this year's Yesterday, which explores a world in which the Beatles never existed. Di Martino also played Lily on Into the Badlands.
Click the button below to start this article in quick view.
Little is known about Loki at this time. However, the Disney+ series will tie into Doctor Strange and the Multiverse of Madness, much like WandaVision. The show will seemingly involve time travel and follow the 2012 version of Loki, who escaped with the Tesseract during Avengers: Endgame, as he alters historical events.
Loki, starring Tom Hiddleston, is set to hit Disney+ sometime in Spring 2021. Rick & Morty writer Michael Waldron will write the series and be billed as creator, with Sex Education's Kate Herron directing all the episodes.
https://schema.orgBreadcrumbListListItem1Homehttps://www.cbr.com/ListItem2TVhttps://www.cbr.com/category/tv/ListItem3TV Newshttps://www.cbr.com/category/tv/news-tv/ListItem4Disney+'s Loki Series In Talks With Yesterday Actor to Co-Starhttps://www.cbr.com/disney-loki-sophia-di-martino-co-star/


Based on Bainbridge Island, WA, we provide PC software & hardware support and sales, network setup, server administration, and tech support for the home, home business, and small business sectors for the Bainbridge Island and Poulsbo areas at affordable rates. Crisis Response Unit was formed due to home users and small business users alike needing a simple and effective company to manage their computing and IT resources. Our technicians are highly trained and certified with a variety of industry certifications, along with plenty of previous experience, all while maintaining a friendly and easy to work with composure. Our philosophy is to always do the right thing, and to always aim for the closest possible degree of perfection.
To see more about the things we do, please take a look at our list of services we provide by clicking on one of the links at the top of the page.


Developer Quickstart
- Every runnable thing within the locker is it’s own web service (written in node, python, and ruby to start)
- There is a core web service that coordinates stuff and handles startup, scheduling, etc
- The types of services are generally: connectors, collections, and apps
- Any service once it’s “installed” is assigned it’s own local directory for storing anything
- Connectors are probably the best way to add value fast to the platform, the more places we enable getting data from the better
Connectors
- Fundamental goal: mirror/sync data from somewhere else
- Store that data in JSON in as identical-to-the-source structure as possible
- Structure the data in a simple archival way, take the long-view
- Serve it back up via as simple of a RESTful API as possible, just make it accessible in bulk upon request
- Be OK with being turned off anytime (graceful start)
- Identify your data to the locker via simple service types (below)
- Generate event notifications when data changes
Collections
- General common data-types, one Collection per type (places, contacts, links, messages, music, photos, etc)
- Need to know how to speak service-types specific to the diverse set of connectors, understand the raw data formats
- Embody the intelligence to merge and dedup from many sources, and handle local meta-data around each datum.
- Register for event notifications to stay up to date efficiently
- Many will consume-from / feed-to other Collections
- Preserve and convey the context of where the data came from (“via”)
- Be able to cold start from scratch by “crawling” existing data as well as subsequent updating from pushed events
Apps
- Can talk to Connectors or Collections, whatever data they need
- For now, primary interface is just via web browser
- Should contain all resources needed locally
- Do something awesome for the person with their data :)
Service Types
A “service types” system, mimic mime types for collections/connectors, connectors list what they require and produce, apps can list what types they need to work
A connector advertises which type it produces (page/safari-bookmark), and that type has a spec of common attributes expected within the data for the first part (page), the second part should describe the native format from the source of the data (safari-bookmark)
place/facebook
place/foursquare
photo/flickr
contact/addressbook
page/safari-bookmark
page/safari-history


{% extends 'layoutv2.html' %} {% block title %}LaunchLab{% endblock %} {% block head %} {% parent %} {% endblock %} {% block content %}
Showcase your work. See what others are making. Connect to the openwindow community.


A history list is useful for backtracking to earlier loaded documents or places previously visited in the same document. From the users point of view, histories are normally accessed as menu items and/or Back/Forward buttons.
The key properties and events relating to history lists are the History, TitleHistory, HistoryIndex, and HistoryMaxCount properties, the ClearHistory method, and the OnHistoryChange event.
1.Set HistoryMaxCount to the number of list items wanted. HistoryMaxCount should be set to 0 if no history list is desired.
2.History (TStrings) will be automatically updated with filenames as files are loaded and positions changed. The History strings may be used as menu items or as listbox contents. Ordering is such that the current file is at index 0.
3.TitleHistory (TStrings) will be automatically updated with document titles as files are loaded and positions changed. The TitleHistory strings may be used as menu items or as listbox contents. Ordering is such that the current file is at index 0.
4.An OnHistoryChange event occurs each time the history list changes. A method responding to this event may be used to determine which buttons and/or menu items are visible, grayed, or checked.
5.The HistoryIndex property may be read to determine which history list item is currently active. Setting of the HistoryIndex property to a new value loads and positions the appropriate file. HistoryIndex can not be set outside the range of the current history list.
6.The ClearHistory method may be used to clear the History List.
For TFrameViewer, History and TitleHistory list only changes in the main document, and HistoryIndex manipulates only the main document history list. However, TFrameViewer maintains an addtional history structure which keeps track of local changes within the Frames of the current main document. The key items for the local history list are the GoFwd and GoBack methods and the FwdButtonEnabled and BackButtonEnabled properties.
7.The GoFwd and GoBack methods should be called by forward and back buttons to move through the local history list. Once the limits of the local history list are reached, these methods will also move through the main history list.
8.The FwdButtonEnabled and BackButtonEnabled properties may be checked in the OnHistoryChange event handler to ascertain if the forward and back buttons should be enabled.


CURLOPT_PROXYHEADER explained
NAME
CURLOPT_PROXYHEADER - custom HTTP headers to pass to proxy
SYNOPSIS
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYHEADER, struct curl_slist *headers);
DESCRIPTION
Pass a pointer to a linked list of HTTP headers to pass in your HTTP request sent to a proxy. The rules for this list is identical to the CURLOPT_HTTPHEADER option's.
The headers set with this option is only ever used in requests sent to a proxy - when there's also a request sent to a host.
The first line in a request (containing the method, usually a GET or POST) is NOT a header and cannot be replaced using this option. Only the lines following the request-line are headers. Adding this method line in this list of headers will only cause your request to send an invalid header.
Pass a NULL to this to reset back to no custom headers.
DEFAULT
PROTOCOLS
EXAMPLE
CURL *curl = curl_easy_init(); struct curl_slist *list; if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy.example.com:80"); list = curl_slist_append(NULL, "Shoesize: 10"); list = curl_slist_append(list, "Accept:"); curl_easy_setopt(curl, CURLOPT_PROXYHEADER, list); curl_easy_perform(curl); curl_slist_free_all(list); /* free the list again */ }
AVAILABILITY
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSO
CURLOPT_HEADEROPT, CURLOPT_HTTPHEADER
This HTML page was made with roffit.


Lioness of Gir
Monkeys swing merrily from tree to tree. Deer, wild, boars, and antelopes roam freely among the clump of trees. If you were to go deep into the fores5, you might even see a majestic lion, stalking its prey. This is the Gir forest in Gujarat, the only reserve forest in Asia where you can still see the king of the forest walking around.


Banded alignment is a constraint based on a value k. When filling out the alignment matrix, the two sequences are limited in their difference by at most k edit operations.
The main result of this is a "band" being produced along the main diagonal of the matrix with a width of k.
Banded alignment example with k = 1


Autor - Andrew Bakalov
Time - 10 minutes
-Introductory part
-Question 1: Introduction to Electron
1.1 Short description
1.2 History of creation
-Question 2: Main information
-Question 3: Main advantages and disadvantages
3.1 Advantages
3.2 Disadvantages
-Conclusion and questions
Introductory part
It isn`t obligatory part of the presentation, however here we will find out what is Electron. At the end will be funny surprise.
-Question 1: Introduction to Electron
1.1 Short description
-Question 1: Introduction to Electron
1.2 History of creation
-Question 2: Main information
-Question 2: Main information
-Question 3: Main advantages and disadvantages
3.1 Advantages
-Question 3: Main advantages and disadvantages
3.2 Disadvantages


Sometimes you don't want any configuration and you just want the grid to bind against the simplest possibly data. In these cases you can either pass just the rows of data you want to show, letting the widget figure out everything else, or pass your data with a list of property-name-only columns. In either case it is still necessary that the configuration be an object with at the very least a data
property.
var data = [ /* Some data /* ]; return { grid1: { data: data }, grid2: { data: data, columns: [ 'firstName', 'Last Name'] } }; };


Begin typing to select a Project, then select the desired Build Config from the list below.
Clear
Select
All
Add Selected
{{ item.buildConfig.name }}


We are the Children Of The Corn. We are a young team with what we believe is great potential. We believe this season is our opportunity to learn as much as we can and to be the best we can be. We are determined to reach our goals and we love the challenges that Robotics presents.
Hello! My name is Will. I am Team 99158B's builder and I am the back-up programmer as well. I also enjoy and take part in band, soccer, and baseball.
Hello! My name is Nick. I am a builder for 99158B and I enjoy acting, soccer, basketball, and baseball.
Hello! My name is Evan. I am a builder for 99158B and I partake in
NJHS, 4H, baseball, and soccer.
"May your team be great and your awards be greater"
Hello! My name is Abby. I am the programmer and notebooker for 99158B and I love to cheer and I participate in NJHS.
Hello! My name is Kyah. I build and sketch for 99158B and I also participate in cheer, 4H, NJHS, Girl Scouts and band.
Hello! My name is Will. I am Team 99158B's builder and I am the back-up programmer as well. I also enjoy and take part in band, soccer, and baseball.
Hello! My name is Nick. I am a builder for 99158B and I enjoy acting, soccer, basketball, and baseball.
Hello! My name is Evan. I am a builder for 99158B and I partake in
NJHS, 4H, baseball, and soccer.
"May your team be great and your awards be greater"
Hello! My name is Abby. I am the programmer and notebooker for 99158B and I love to cheer and I participate in NJHS.
Hello! My name is Kyah. I build and sketch for 99158B and I also participate in cheer, 4H, NJHS, Girl Scouts and band.
Hello! My name is Will. I am Team 99158B's builder and I am the back-up programmer as well. I also enjoy and take part in band, soccer, and baseball.
Hello! My name is Nick. I am a builder for 99158B and I enjoy acting, soccer, basketball, and baseball.
Hello! My name is Evan. I am a builder for 99158B and I partake in
NJHS, 4H, baseball, and soccer.
"May your team be great and your awards be greater"
Hello! My name is Abby. I am the programmer and notebooker for 99158B and I love to cheer and I participate in NJHS.
Hello! My name is Kyah. I build and sketch for 99158B and I also participate in cheer, 4H, NJHS, Girl Scouts and band.


Dear Friend, With due respect I like to disclose a mutual transaction to you. I am Dr Ateeq Rahman Khan the Manager, International Diplomatic Cargo Services. We have consignment valued US$15.500,000,00 Fifteen Point Five Million United State Dollars in our custody,deposited by a customer from Belgium. Now in our computer system it records that beneficiary of the deposited consignment is dead on Air Crash early June 2003.Until date we have not receive any signal from his relation for claiming of the deposited consignment. Now I want your assistance to move out this consignment to your country for investment. As the manager of our company I would take all measures to make sure the consignment successfully moved to your end. Immediately I receive your positive response then I will update you on the procedures for success of this our trustee transaction. I would appreciate you keep it utmost secret because of my position. Expecting your reply via email<EMAIL_ADDRESS>Best Regards, Dr Ateeq Rahman Khan


Please enter your Delivery Details and Billing Information.
Meal1 @ $9
for 1 person
Meal2 @ $9
Meal3 @ $9
Meal4 @ $9
Meal5 @ $9
Discount
$0
Total
$9
Thank you for your order!


Try Now ↗
-
1
Great Success - @mirror is installed!
Invite @mirror to a channel whose content you want to share and Slack will ask you to confirm.
Then enter @mirror help to see available actions. -
2
Get the URL of the remote team
Your external contact needs install the mirror app and provide you with the URL of the external slack team they want you to link to. This link contains the channel ID, which would be really hard to guess. For example. our mirror-support channel is
https://maclawran.slack.com/messages/CFMMBM5AP/ -
3
Link the channels
Now to link your current channel to our @mirror slack support channel enter:
@mirror mirror https://maclawran.slack.com/messages/CFMMBM5AP/


I am Web designer & Developer
Akilah Institute,12 KN 77st,Kigali-Diploma November-2020 INS(Information system).
I have done many projects which may solve some problems which are in our society.
If you have any project of it you want a software for
business you may tell me i may help you
Click on the following image to view my projects
If you Have Any Project In your Mind,you may find me on the following address
| Address: Rwamagana,Kigabiro |
| Email<EMAIL_ADDRESS>|
| Phone:<PHONE_NUMBER> |


Server module¶
Messenger’s server module. Processes message dictionaries, stores RSA public keys of clients.
Usage:
The module supports the following command line arguments:
- -a, --addr
Address from which the connection is accepted. If blank, then connection is accepted from all addresses.
- -p, --port
Listening port that accepts the connections
- -n, --no_gui
The ‘no gui’ flag. If present the server module will run in console window with limited functionality. Note, that in this mode only one command is supported: exit - stops the server.
Examples:
python server.py -p 8080
Starts the server at port 8080
python server.py -a localhost
Starts the server that accepts connections from localhost only
python server.py -n
Starts the server with no GUI
server.py¶
The main module of the server application, includes parsers for command line arguments, configuration file and the main loop. The main server loop works the following way: first it acquires the launch and configuration parameters, then launches the server thread and initializes the GUI.
server_core.py¶
-
class
serverapp.server_core.
MessagingServer
(listening_address: str, listening_port: int, db: serverapp.server_db.ServerDatabase)¶ The main class of the server.
-
__init__
(listening_address: str, listening_port: int, db: serverapp.server_db.ServerDatabase)¶ Server initialization. Creates the attributes needed for the server to work, sets the working flag as True.
- Parameters
listening_address – server’s IP address
listening_port – server’s port
db – server’s database
Handles the client’s authorization. Checks if the username isn’t already taken, then checks if the user is registered on the server. If those two checks pass, the method then initiates the exchange of encrypted passwords with the client. If the password is correct, the client is logged onto the server, otherwise the client is removed from the server and his socket gets closed.
- Parameters
message – presence message
client – client’s socket
-
delete_client
(client: socket.socket)¶ Closes the connection with the client who decided to leave the server. Logs him out in the DB, deletes from the list of active users and closes the socket.
- Parameters
client – client’s socket
-
process_client_message
(message: dict, client: socket.socket)¶ Handles the messages from clients according to their service codes. This method handles authorization, client’s exit, contact list, existing users’ and public key requests, requests to add or delete a contact and messages from client to client (this method also records these messages to server DB). This method triggers a relevant handler if needed, or tries to send a response with a relevant service code (200, 202, 511 or 400 in case of bad request). If sending a message was not possible, this method deletes the user from the list of active users.
- Parameters
message – dictionary with a message
client – client’s socket
-
run
()¶ The main loop of the server. Creates a listening socket, and then accepts connections while the working flag is True. If there are clients with messages, sends them.
-
send_client_message
(message: dict)¶ Handles the exchange of messages between clients. Validates the message and sends it if correct
- Parameters
message – dictionary with the message
-
update_list
()¶ Generates the message with 205 code that triggers the update of contact and active users’ lists for all active clients.
-
server_db.py¶
-
class
serverapp.server_db.
ServerDatabase
(filepath: str)¶ Representation of the server’s database.
-
class
ActiveUsers
(login: str, address: str, port: int, date: datetime.datetime)¶ Representation class for table of active clients.
-
__init__
(login: str, address: str, port: int, date: datetime.datetime)¶ Initialization of table.
- Parameters
login – client’s nickname
address – client’s IP address
port – client’s port
date – date and time of activity
-
-
class
AllUsers
(username: str, password_hash: bytes)¶ Representation class for table of all users.
-
__init__
(username: str, password_hash: bytes)¶ Initialization of the table.
- Parameters
username – client’s login
password_hash – hashed password
-
-
class
ContactList
(owner: str, contact: str)¶ Representation class for table of users’ contacts
-
__init__
(owner: str, contact: str)¶ Initialization of table.
- Parameters
owner – contact owner
contact – contact itself
-
-
class
UserActionHistory
(login: str)¶ Representation class for table of users’ activities’ history
-
__init__
(login: str)¶ Initialization of the table.
- Parameters
login – client’s nickname
-
-
class
UserLoginHistory
(login: str, address: str, port: int, date: datetime.datetime)¶ Representation class for table with users’ login history.
-
__init__
(login: str, address: str, port: int, date: datetime.datetime)¶ Initialization of the table.
- Parameters
login – client’s nickname
address – client’s IP address
port – client’s port
date – date and time of activity
-
-
__init__
(filepath: str)¶ Initialization and creation of tables. Creates all the tables, mappers and a session. Deletes all previous entries from the table of active users.
- Parameters
filepath – path to DB
-
add_contact_to_list
(owner: str, contact: str)¶ Handles adding one user to the contacts of another. Checks if the user is already in the contact list and finishes working if they do, otherwise adds new entry to the Contacts table.
- Parameters
owner – the owner of the contact
contact – user to be added to contact list
-
all_active_users_list
() → list¶ Returns the list of tuples with entries of all currently active users.
-
all_users_list
() → list¶ Returns the list of tuples with entries of all existing users.
-
check_existing_user
(login: str) → bool¶ Checks if such user already exists on the server. Returns True if they do, False otherwise.
- Parameters
login – client’s nickname
-
get_message_history
() → list¶ Returns the list of tuples with entries of users’ message history.
-
get_user_contact_list
(user: str) → list¶ Returns the list of strings with nicknames of all the contacts of a specific user.
- Parameters
user – client’s nickname
-
get_user_public_key
(login: str) → Crypto.PublicKey.RSA.RsaKey¶ Returns the public RSA key of the user.
- Parameters
login – client’s nickname
-
get_user_pwd_hash
(login: str) → bytes¶ Returns the hashed password of the user.
- Parameters
login – client’s nickname
-
login_user
(login: str, ip: str, port: int, key: Crypto.PublicKey.RSA.RsaKey)¶ Handles the login process for clients. Checks if user is already registered on the server, and if he is logs him in, adds him to the table of active users and makes a new entry to the login history table.
- Parameters
login – client’s nickname
ip – client’s IP address
port – client’s port
key – client’s public RSA key
-
logout_user
(login: str)¶ Handles the logout process on the server. Deletes the user from the table of active users.
- Parameters
login – client’s nickname
-
record_message_to_history
(sender: str, recipient: str)¶ Records message to message history.
- Parameters
sender – self-explanatory
recipient – self-explanatory as well
-
register_user
(login: str, pwd_hash: bytes)¶ Handles the registration of a new user on the server. Creates a new entry to the All Users table and User Action History table.
- Parameters
login – client’s nickname
pwd_hash – hashed password
-
remove_contact_from_list
(owner: str, contact: str)¶ Handles the removal of one user from the contacts of another. Checks if the user is actually in the contact list and finishes working if they aren’t, otherwise deletes the entry from the Contacts table.
- Parameters
owner – the owner of the contact
contact – user to be removed from the contact list
-
remove_user_from_db
(login: str)¶ Removes the user and entries related to him from all the tables!
- Parameters
login – client’s nickname
-
show_user_login_history
(user: Optional[str] = None) → list¶ Returns the list of tuples with login history of either all users or one specific user.
- Parameters
user – client’s nickname
-
class
server_gui.py¶
-
class
serverapp.server_gui.
MainWindow
(server: serverapp.server_core.MessagingServer, db: serverapp.server_db.ServerDatabase, config: configparser.ConfigParser)¶ Main class of GUI.
-
__init__
(server: serverapp.server_core.MessagingServer, db: serverapp.server_db.ServerDatabase, config: configparser.ConfigParser)¶ GUI initialization. Creates all the elements, creates the status bar and connects all the buttons to their respective handlers.
- Parameters
server – server thread
db – server database
config – server configuration file
-
configure_server
()¶ Modal window with server configuration.
-
create_active_users_model
()¶ Creates the model of all currently active users to show in the main window of the app. Queries the DB and adds entries to the model.
-
delete_user
()¶ Modal window with client deletion.
-
register_user
()¶ Modal window with client registration. That is the only way someone can be registered in the chat.
-
show_users_stats
()¶ Modal window with users’ action history.
-
server_config_window.py¶
-
class
serverapp.server_config_window.
ConfigWindow
(config: configparser.ConfigParser)¶ Main GUI class
-
__init__
(config: configparser.ConfigParser)¶ Initialization of the GUI. Sets up all the elements and connects all the buttons to their respective handlers.
- Parameters
config – configuration file
-
file_dialog_handler
()¶ Handles a modal window to choose the directory with the server DB.
-
save_config_data
()¶ Handles the modal window with server configuration data, checks the validity of the entered values and if they aren’t valid triggers a relevant message. On success triggers a message as well.
-
server_history_window.py¶
-
class
serverapp.server_history_window.
UserHistoryWindow
(db: serverapp.server_db.ServerDatabase)¶ The main class of GUI.
-
__init__
(db: serverapp.server_db.ServerDatabase)¶ Initialization of GUI. Creates all the necessary elements and the model with info to be displayed.
- Parameters
db – server database
-
create_message_history_model
()¶ Creates the model with users’ history info. Queries the DB and adds entries to the model.
-
server_reg_user.py¶
-
class
serverapp.server_reg_user.
RegisterUser
(db: serverapp.server_db.ServerDatabase, server_thread: serverapp.server_core.MessagingServer)¶ Main class of GUI.
-
__init__
(db: serverapp.server_db.ServerDatabase, server_thread: serverapp.server_core.MessagingServer)¶ Initialization of GUI. Sets up al the necessary elements, connects the “save” button to its handler.
- Parameters
db – server database
server_thread – server thread
-
save_user
()¶ Validates the entered values and triggers relevant messages if the data is not correct. Otherwise, generates the hashed password, registers the user in the DB and prompts the server to update the active users’ list.
-
server_rem_user.py¶
-
class
serverapp.server_rem_user.
RemoveUser
(db: serverapp.server_db.ServerDatabase, server_thread: serverapp.server_core.MessagingServer)¶ Main class of GUI.
-
__init__
(db: serverapp.server_db.ServerDatabase, server_thread: serverapp.server_core.MessagingServer)¶ Initialization of GUI. Sets up all the necessary elements, connects the button to their handlers and triggers the update of the list of existing users.
- Parameters
db – server database
server_thread – server thread
-
remove_user
()¶ Handles the deletion of the user. Checks if the user is registered on the server, deletes him and prompts the server to update the list of active users.
-
update_selector
()¶ Updates the list of active users in the selector.
-


This is an example of traceful, a very small service that performs a traceroute for the client.
The source code for this service is available on Github
A docker image is available on Docker Hub
A simple traceroute, returns JSON when complete:
$ curl -s http://traceful.jn.gl/traceroute/twitter.com | jq { "destination": "twitter.com", "hops": [ { "ttl": 1, "host": "ip-172-17-0-1.us-west-2.compute.internal.", "address": "<IP_ADDRESS>", "rtt": 70414 }, { "ttl": 2, "host": "ec2-50-112-0-96.us-west-2.compute.amazonaws.com.", "address": "<IP_ADDRESS>", "rtt": 1402941 }, ...snip
To stream responses use the /stream endpoint
$ curl -i http://traceful.jn.gl/stream/google.com HTTP/1.1 200 OK Content-Type: application/stream+json Date: Mon, 02 Jan 2017 03:10:56 GMT Transfer-Encoding: chunked {"ttl":1,"host":"<IP_ADDRESS>","address":"<IP_ADDRESS>","rtt":1859358} {"ttl":2,"host":"<IP_ADDRESS>","address":"<IP_ADDRESS>","rtt":10738752} {"ttl":3,"host":"te-0-7-0-2-sur03.sffolsom.ca.sfba.comcast.net.","address":"<IP_ADDRESS>","rtt":13799290} {"ttl":4,"host":"be-209-ar01.santaclara.ca.sfba.comcast.net.","address":"<IP_ADDRESS>","rtt":11344438} {"ttl":5,"host":"be-33651-cr01.sunnyvale.ca.ibone.comcast.net.","address":"<IP_ADDRESS>","rtt":13739395} ...snip
You can also supply optional parameters to both endpoints
| Parameter | Values |
|---|---|
| hops | 1 through 255 |
| retries | 1 through 10 |
| timeout | 1 through 5000 in milliseconds |
| size | 1 through 1400 bytes |


“There is always room for change, but you have to be open to that change.”
“The very heart of yoga practice is ‘abyhasa’ – steady effort in the direction you want to go.”
“Yoga means addition – addition of energy, strength and beauty to body, mind and soul.”
In addition to these programs offered globally, The Art of Living, working in collaboration with The International Association for Human Values (IAHV), has successfully implemented numerous humanitarian projects and service initiatives including conflict resolution programs, disaster relief, sustainable rural development, empowerment of women, prisoner rehabilitation, education for all, and environmental sustainability.
In addition to these programs offered globally, The Art of Living, working in collaboration with The International Association for Human Values (IAHV), has successfully implemented numerous humanitarian projects and service initiatives including conflict resolution programs, disaster relief, sustainable rural development, empowerment of women, prisoner rehabilitation, education for all, and environmental sustainability.


Call of Duty: Modern Warfare November 15th update fixes the stuttering cut-scenes issue, improves stability
by John PapadopoulosInfinity Ward and Beenox have released a brand new update for the PC version of Call of Duty: Modern Warfare. This new patch finally fixes the stuttering issues that players experienced during the pre-rendered cut-scenes.
These stuttering issues were one of our biggest gripe with COD: MW. So yeah, it’s at least good knowing that Beenox has heard its fanbase and fixed them. Here is hoping that it will also address or minimize the pop-in issues.
The November 15th update also improves overall stability. Furthermore, it includes a fix for Dev Error 6178.
As always, Battlenet will download this patch the next time you launch its launcher, and you can find its complete changelog below.
Call of Duty: Modern Warfare November 15th Patch Release Notes
- Implemented fixes to prevent stuttering/hitching during cutscenes; if you still experience this, please let us know
- Overall stability improvements, including a fix for Dev Error 6178


GitHub is a repository hosting service. Think of it as the "cloud" for code. GitHub will host your source code projects in a variety of different programming languages and keep track of the various changes made to every iteration. It is able to do this by using git, a revision control system that runs in the command line interface. Using GitHub has numerous benefits including easier collaboration with colleagues and peers, ability to look back on previous versions, and tons of easy integration options.
I have heard of GitHub before taking the class, however I have never experimented with it or set up an account. The video that Rio posted in class showing how to create a repo was an extremely helpful guide for me. When I went over to GitHub, I was able to set up an account with no problems, and I was to create a repo as well. Although, looking over GitHub and creating the repo was a bit awkward for me at that time. However, I think using GitHub for this class really helped me expand my horizon and reinforced myself to invest my education wisely. I gained valuable knowledge from using GitHub from this class. I am interested to see how GitHub works for me in the future, as well to whether if it will continued to be a challenge or not. One thing that I loved from watching the video from Rio for how to set up GitHub account was when she showed us how to do a shortcut for creating an index.html file.


{% include head.html %}
{% include submenu-de.html %}
{{ content }}
{% include footer_toolkit-de.html %} {% include js.html %}


Netflix set to make fourth Beverley Hills Cop film with Eddie Murphy
The streaming giant has bought the rights to the film from Paramount Studios, which dropped its plans for the project in 2016
by James Rodger, https://www.facebook.com/jamesrodgerjournalistNetflix is set to produce a fourth Beverly Hills Cop film, which will see Eddie Murphy reprise his role as maverick detective Axel Foley.
The streaming giant has bought the rights to the film from Paramount Studios, which dropped its plans for the project in 2016.
Jerry Bruckheimer, who produced the first two films, is in line to produce the reboot.
Murphy starred as the wisecracking Foley in the 1984 original Beverly Hills Cop and then again for its sequels in 1987 and 1994.
The original saw Murphy's character arriving in Los Angeles trying to solve the mystery of his best friend's murder.
It was a critical and commercial success and shot Murphy to international acclaim.
The 58-year-old actor and comedian is widely tipped for awards season success for his starring role in Netflix's Dolemite Is My Name.


Description
So after geting some PCB’s made I decided to try my hand at writing drivers for the 34C04 EEPROM I2C chips that I use to identify each PCB plugged into the backplane board.
I decided to write this in rust as my C language foo is not so great, also rust is cool and I want to try it out for embedded work as I already use it for pc code development.
My setup is as follows:
- IDE = VScode.
- OS = Ubuntu - I run ubuntu at home and virtualize Windows where needed.
- Target = STM32 - Blue Pill
Issues
The first issue was getting it setup nicely with GDB for debugging, fortunatly the web is full of people doing it. The second issues was to set it up in such a way that my unit test code is compiled and ran on my workstation and the the application code is compiled and ran on the target, I managed to figure it out.
Some example code:
let address = eeprom34c04::SlaveAddr::A2A1A0(false, true, true);
let mut eeprom = eeprom34c04::Eeprom34c04::new_34c04(i2c_setup, address);
let memory_address = 0x0F;
let data = 0xF0;
eeprom.write_byte(memory_address, data).unwrap();
delay.delay_ms(5u16);
let read_data = eeprom.read_byte(memory_address).unwrap();


Kerry Katona jokes she's no longer 'car crash of the century'
Kerry Katona has compared her infamous This Morning interview to that of Prince Andrew’s ‘nuclear explosion level bad’ interview on Newsnight.
The Duke Of York’s sit down with Emily Maitlis caused viewers to cringe as he attempted to explain his friendship with Jeffrey Epstein and insisted he could not have had sex with the woman accusing him because he had taken daughter Beatrice to Pizza Express on that specific date.
Now Kerry has compared her own infamous interview in 2008 to that of the royal’s, celebrating she was no longer the ‘car crash of the century’.
In the chatter around Prince Andrew’s interview, who would have thunk Kerry would be weighing in, eh?
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During her own interview, the former Atomic Kitten star slurred her words and frequently looked around the studio calling for her husband Mark Croft as she was interviewed by presenters Philip Schofield and Fern Britton.
Over a decade ago Kerry was grilled on air and accused of being drunk, later blaming her worse-for-wear appearance was down to her bipolar medication.
Taking to social media, Kerry shared a side by side shot of her interview with Prince Andrew’s as she wrote: ‘Turns out my interview is no longer car crash of the Century no more #princeandrew cheers for that!!!’
Riffing on his claim he was at the Pizza Express – remembering the location and day perfectly in the interview – Kerry added she believed she saw the royal in Woking Iceland.
Yesterday reaction to the ‘no holds barred’ interview flooded social media.
TV presenter Giles Coren said he was not convinced by the pizza story, tweeting: ‘Ask him what he ordered. If he says “a sloppy Giuseppe” you’ve got him. Because they didn’t introduce that till 2006.’
Later in the interview Prince Andrew was told how [accuser] Mrs Guiffre had been ‘very specific’ about him that night, claiming he was ‘profusely sweating’ and that she went on to have a bath.
The duke told Ms Maitlis there was a ‘slight problem’ with that story – claiming he was unable to perspire at the time.
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Of the interview overall, Royal Central website editor Charlie Proctor said: ‘I expected a train wreck.
‘That was a plane crashing into an oil tanker, causing a tsunami, triggering a nuclear explosion level bad.’
Comedian Dom Joly also described it as ‘a worse car crash than getting a lift home from Prince Philip’.
And now Kerry Katona is a royal correspondent – stranger things have happened.
Got a showbiz story?
If you've got a story, video or pictures get in touch with the Metro.co.uk Entertainment team by emailing us<EMAIL_ADDRESS>calling 020 3615 2145 or by visiting our Submit Stuff page - we'd love to hear from you.


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Hackers inject ‘coin-stealing’ malware into official Monero cryptocurrency wallet
by Yessi Bello PerezPrivacy-focused cryptocurrency Monero has warned users that hackers compromised its official website after a coin stealer
“CLI binaries available on http://getmonero.org may have been compromised at some point during the last 24h. Investigations ongoing,” a Monero core developer said on Twitter.
Although the investigation is ongoing, core developers for the project have issued an update confirming that the binaries of the CLI [ Command Line Interface] wallet had been compromised for a short time.
CLI wallets are lightweight console programs, as opposed to GUI wallets, which have a graphical interface.
Users who downloaded binaries throughout yesterday, and failed to check the integrity of the files, should do so immediately, the developer added.
“If the hashes do not match, do NOT run what you downloaded. If you have already run them, transfer the funds out of all wallets that you opened with the (probably malicious) executables immediately, using a safe version of the Monero wallet (the one online as we speak is safe — but check the hashes),” they added.
Correct hashes for all Monero binaries can be downloaded here.


"Good morning everyone! I must say it feels awesome to be back behind a pc coding my life away! Damn! Can't believe its been 17 days since I last touched a computer! Well actually its been 13 cause I spent the last 4 getting this laptop running and also getting back these original souce files for my projects. All my projects put together have at least 10,000 lines of code and accompishments that would be a waste to lose! Well hope everyone liked my intro video. I am still working on the live comments section to receive all your valuable inputs! Then we can all work on the blog page and my other websites together!"
"Good day my fellow readers..Yes yess I know I missed a blog yesterday yet it was imperative that i took break from programming. I spent the majority of my day researching different ways of implementing the comment section. I have decided to use Google Firebase to be the server I use to store the the comments so they can be retrieved and loaded on the site when ever the comments page is loaded. This was the first half of my evening yesterday, after that I wanted to post a blog about firebase but I decided to go learn the API's associated with firebase's products that I would be using. I did that before I posted my blog just incase the API syntax turned out to be too complicating and a waste of time! Turns out it was pretty simple to use i just have to work on plugging it into my website. Also there is the added option of making the comments anonymous or authenticated so that I would at least have an idea of who was posting due to the persistent tags the comments would carry. There would also be a benefit towards being an authenticated user, which is you would have the option of a display Picture to go along with your activities on my blog site. After my morning training session my main focus for the duration of the day will be to get at least the anonymous comment section live and working so that i can get feed back to questionz i have about the designs of my site!! Hope everyone has a blessed day today. Enjoy.
" Ok so we all know there is a pandemic on the outside of the our house but it all seems sooo.. whats he word?? Ah Yes Mundane!! Just as well, there are many pandemic movies , all of which slip my mind atm ..other than outBreak..lol.  I would like to think that most of you would've watched it since it's pilot like me but just to bring back a or introduce to you all a good Show to watch here is The Strain. Have fun Watching! "
"Well started off the day with a bang, and when I say bang I meant it literally cause that was the sound of my body hit the mat after going through some judo drills with a few friends of mine..Big up to Tonz and Marcos for the vibes they
bring to the morning training session.
 Right now no amount of water I have drank so far since 1pm has hydrated me. So in the spirit of keeping up with the coding challenge, I figured I would just right a blog and place a
link to a comedy I watch recently HERE and just like that tadddaaa coding challenge day 3 complete lol ..but srsly yeah that's IT! Have fun viewing! I'll leave same link
HERE also lol. "
"Ite guys and gals for those of you that signed up via the gmail link on the recipe page, thank you. You have sucessfully registered, I am currently working on the profile page that will be populated with your display names and pictures. As a default the gmail link will use your gmail credentials such as your display names and pictures associated with your gmail account. At no time will your passwords be acessed by me or anyoen else. Time to sleep tho... comment section taking some tries to get it working properly. Thanks to all you viewers especialy those that provide feedback! "
"Think I'm getting the hang of this blog thing now...lol. Gonna brain storm on which features to work on first! All are more or less new features I have never done before so it will be a space to me..lol ..I just dont know which way to go..lol.. I seriously neeeed to implement a smiley faces feature for my blogs tho they feel so mundane, but as I said everything is from scratch and everything you see the website doing I have put in the effort to make it happen. Hope you all continue to enjoy your stay..gonna get to that coding ..lol even tho i am coding atm!!"
"Good Morning everyone! Well.. its day three(3) and today is going to be a regular day of work for me! For those who may not know, I am also a proffessional plumber and in this time of quarantine, plumbers are considered essential services.
Thank God for his many mercies and opportunities he has provided in my time of need. Also much of the thanks goes to the client that has hired my services in this time of quarantine.
I have fixed the Dev-notes button, now you
can acess the update notes for the site to see whats new to check out. "
"Oh yess..I say no! Today was.. erm..challenging..lol just bcause of a ';'.. you see ...in most prgramming langauges, the way you write your code (syntax), is very strict and abstract at the same time. While writing programs can be a very creative process, there are still guidelines we need to follow if you dont want your computer screaming at you..lol. Some of those strict rules would be to end a completed line of code (statement) with a semi-colon. Today I forgot one of those semi-colons and when you have 100+ lines of code tracking down some types of errors can be those worse thing to do. This process of finding and editing errors is called debugging..   "
"Good day everyone! In this blog i will be addressing some FAQ's. Such as FAQ means Frequently Asked Question. Ok lets get started.
(1) This blog website is being created from scratch using programming languages.
In my definition
and understanding .
(2) A programming language is a library of shortcuts used to give a computer binary instrutions to complete, All programming languages are written in english or at least some may seem like english ..lol.
(3) The Programming Language used in this site will be vanilla javascript..(just sounds so yummy :P). The web page's look and feel is written in two mark up languages - HTML (Hyper Text Markup Language) and CSS (Cascading Style
Sheets). If anyone would like to start programming as a hobby or career..I recommend starting with HTML and CSS ! BTW I believe all programming languages are free to learn you just have to be interested in learning and let google whisk
you away!
(4) The External projects are not available yet because as I mentioned in an earlier FAQ that this blog site is being created from scratch, and I have decided to focus on making the blog site as reader and user friendly as possible
before I go off and get lost in the other projects...
(5) My developer notes are not there yet. This is because I will be doing most of the update talks in my blog for the 1st few days. "
Alot more features to come in the next few hours.
Comment Board,
Project links
" Day 1 down!! Yesssss...Well not really!..Just finished the blog page and decided that I should do my first blog just to fill the space..instead of that lorem ipsum crap..Soo..today I have completed the basic template for the pages and
link them to the web site."~ Have fun reading!~ :)
Anyways back to the blog...One of the main features I would like to add for you viewers, is a realtime comment board. The feature would allow all authenticated users to
post their most valuable opinions, about topics such as, the Design of the blog page, New features and just also for everyone to connect and share opinions on new features and up-coming ones.
My immediate goals are to design the
look and feel of the blog pages on different size devices. I know some of you readers are eager to see whats all the hubbub surrounding my other projects but they will come in time! In the mean time I will be working on making
your 100 day read on my page is as interactive and exciting as i can! "


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Valverde: When you lose everyone looks at the coach
The Barcelona boss spoke ahead of the clash with Slavia Prague, here are his key quotes
by Jordi GilErnesto Valverde has taken the criticism about Barcelona's defeat by Levante on the chin. Here are his key quotes ahead of the clash with Slavia Prague.
Pressure: It’s clear that when you lose you’re under more pressure, we know what it means to lose at this club. A lot of fuss is always generated and I think that for us that’s good because it obliges you to react.
Performance: We always feel obligated (to perform) because they even generate fuss when you win and you haven’t had a great game. We usually react well and I expect the same tomorrow.
Slavia: I imagine a similar game to the first leg or the one they played away at Inter. They maintain their identity wherever they play. They nearly beat Inter and had good games against Borussia and us. Lots of physicality and arrivals into the box.
Personal: The coach is responsible for the team, the group, when they lose they look at the coach and I take that. In their first two chances they scored. We weren't playing well in attack, we didn't have enough of the ball to stop that.
Dembele: Everyone wants a place, they play to stay in it. The same for Ansu, Luis, Griezmann, Pique. Dembele, when he gets the chance, will have to take it and stop anyone taking his place.


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Bananas whipped cream strawberries rocky road pistachio mint. Salted caramel syrup marshmallows cookies and cream, bananas hot fudge peanut butter cake batter gummy worms strawberries cookies and cream. Gummy worms strawberries rainbow sprinkles cake batter. Salted caramel syrup french vanilla mint chocolate chip neopolitan. Chocolate chip cookie dough peanut butter cups vanilla cookies and cream strawberries vanilla. Pistachio mint rainbow sprinkles salted caramel syrup.


I like to define myself as Creative Engineer. Both these two words are very important to understand really who I am and what’s my mission. I’m an Engineer because I believe that through the technological development, the quality of life can be greatly improved. I’m a creative person because I believe that the technology to support actively the every day life, needs to be innovative and at the same time easy and pleasant to use for everybody. Bring together creativity, design, and efficient solutions to delight people with amazing creations in this new technology era is my mission.


-
What is Vue.js?
Vue (pronounced /vjuː/, like view) is a progressive framework for building user interfaces. Unlike other monolithic frameworks, Vue is designed from the ground up to be incrementally adoptable. The core library is focused on the view layer only, and is easy to pick up and integrate with other libraries or existing projects. On the other hand, Vue is also perfectly capable of powering sophisticated Single-Page Applications when used in combination with modern tooling and supporting libraries.
-
Declarative Rendering
At the core of Vue.js is a system that enables us to declaratively render data to the DOM using straightforward template syntax:
HTML

 {{ message }}

Javascript
var app = new Vue ({ el: '#app', data: { message: 'Hello Vue!' } })
Result
{{ message }}We have already created our very first Vue app! This looks pretty similar to rendering a string template, but Vue has done a lot of work under the hood. The data and the DOM are now linked, and everything is now reactive. How do we know? Open your browser’s JavaScript console (right now, on this page) and set
app.message
to a different value. You should see the rendered example above update accordingly.In addition to text interpolation, we can also bind element attributes like this:
HTML

  Hover your mouse over me for a few seconds to see my dynamically bound title!

Javascript
var app2 = new Vue ({ el: '#app-2', data: { message: 'You loaded this page on ' new Date().tolocaleString() } })
Result
Hover your mouse over me for a few seconds to see my dynamically bound title!Here we are encountering something new. The
v-bind
attribute you are seeing is called a directive. Directives are prefixed withv-
to indicate that they are special attributes provided by Vue, and as you may have guessed, they apply special reactive behavior to the rendered DOM. Here, it is basically saying “keep this element’stitle
attribute up-to-date with themessage
property on the Vue instance.”If you open up your JavaScript console again and enter
app2.message = 'some new message'
, you’ll once again see that the bound HTML - in this case thetitle
attribute - has been updated. -
Conditionals and Loops
It’s easy to toggle the presence of an element, too:
HTML

 Now you see me

Javascript
var app3 = new Vue({ el: '#app-3', data: { seen: true } })
Result
Now you see meGo ahead and enter
app3.seen = false
in the console. You should see the message disappear.This example demonstrates that we can bind data to not only text and attributes, but also the structure of the DOM. Moreover, Vue also provides a powerful transition effect system that can automatically apply transition effects when elements are inserted/updated/removed by Vue.
There are quite a few other directives, each with its own special functionality. For example, the
v-for
directive can be used for displaying a list of items using the data from an Array:HTML

 {{ todo.text }}

Javascript
var app4 = new Vue({ el: '#app-4', data: { todos: [ { text: 'Learn JavaScript' }, { text: 'Learn Vue' }, { text: 'Build something awesome' } ] } })
Result
- {{ todo.text }}
In the console, enter
app4.todos.push({ text: 'New item' })
. You should see a new item appended to the list. -
Handling User Input
To let users interact with your app, we can use the
v-on
directive to attach event listeners that invoke methods on our Vue instances:HTML

{{ message }}
 <button v-on:click="reverseMessage">Reverse Message</button>

Javascript
var app5 = new Vue({ el: '#app-5', data: { message: 'Hello Vue.js!' }, methods: { reverseMessage: function () { this.message = this.message.split('').reverse().join('') } } })
Result
{{ message }}
Note that in this method we update the state of our app without touching the DOM - all DOM manipulations are handled by Vue, and the code you write is focused on the underlying logic.
Vue also provides the
v-model
directive that makes two-way binding between form input and app state a breeze:HTML

{{ message }}
 <input v-model="message">

Javascript
var app6 = new Vue({ el: '#app-6', data: { message: 'Hello Vue!' } })
Result
{{ message }}
-
Composing with Components
The component system is another important concept in Vue, because it’s an abstraction that allows us to build large-scale applications composed of small, self-contained, and often reusable components. If we think about it, almost any type of application interface can be abstracted into a tree of components:
In Vue, a component is essentially a Vue instance with pre-defined options. Registering a component in Vue is straightforward:
Javascript
// Define a new component called todo-item Vue.component('todo-item', { template: '
This is a todo
' })
Now you can compose it in another component’s template:
HTML

 <todo-item></todo-item>

But this would render the same text for every todo, which is not super interesting. We should be able to pass data from the parent scope into child components. Let’s modify the component definition to make it accept a prop:
\Javascript
Vue.component('todo-item', { // The todo-item component now accepts a // "prop", which is like a custom attribute. // This prop is called todo. props: ['todo'], template: '
{{ todo.text }}
' })
Now we can pass the todo into each repeated component using
v-bind:
HTML

  <todo-item v-for="item in groceryList" v-bind:todo="item" v-bind:key="item.id" ></todo-item>

Javascript
Vue.component('todo-item', { props: ['todo'], template: '
{{ todo.text }}
' }) var app7 = new Vue({ el: '#app-7', data: { groceryList: [ { id: 0, text: 'Vegetables' }, { id: 1, text: 'Cheese' }, { id: 2, text: 'Whatever else humans are supposed to eat' } ] } })
Result
This is a contrived example, but we have managed to separate our app into two smaller units, and the child is reasonably well-decoupled from the parent via the props interface. We can now further improve our
<todo-item>
component with more complex template and logic without affecting the parent app.In a large application, it is necessary to divide the whole app into components to make development manageable. We will talk a lot more about components later in the guide, but here’s an (imaginary) example of what an app’s template might look like with components:
HTML

 <app-nav></app-nav> <app-view> <app-sidebar></app-sidebar> <app-content></app-content> </app-view>

Relation to Custom Elements
You may have noticed that Vue components are very similar to Custom Elements, which are part of the Web Components Spec. That’s because Vue’s component syntax is loosely modeled after the spec. For example, Vue components implement the Slot API and the
is
special attribute. However, there are a few key differences:-
The Web Components Spec has been finalized, but is not natively implemented in every browser. Safari 10.1+, Chrome 54+ and Firefox 63+ natively support web components. In comparison, Vue components don’t require any polyfills and work consistently in all supported browsers (IE9 and above). When needed, Vue components can also be wrapped inside a native custom element.
-
Vue components provide important features that are not available in plain custom elements, most notably cross-component data flow, custom event communication and build tool integrations.
-
Every Vue application starts by creating a new Vue instance with the Vue
function:
var vm = new Vue({
// options
})
Although not strictly associated with the MVVM pattern, Vue’s design was partly inspired by it. As a convention, we often use the variable
When you create a Vue instance, you pass in an options object. The majority of this guide describes how you can use these options to create your desired behavior. For reference, you can also browse the full list of options in the API reference.
A Vue application consists of a root Vue instance created with new Vue
, optionally organized into a tree of nested, reusable components. For example, a todo app’s component tree might look like this:
Root Instance
└─ TodoList
├─ TodoItem
│ ├─ DeleteTodoButton
│ └─ EditTodoButton
└─ TodoListFooter
├─ ClearTodosButton
└─ TodoListStatistics
We’ll talk about the component system in detail later. For now, just know that all Vue components are also Vue instances, and so accept the same options object (except for a few root-specific options).
View the rest of this section here
Vue.js uses an HTML-based template syntax that allows you to declaratively bind the rendered DOM to the underlying Vue instance’s data. All Vue.js templates are valid HTML that can be parsed by spec-compliant browsers and HTML parsers.
Under the hood, Vue compiles the templates into Virtual DOM render functions. Combined with the reactivity system, Vue is able to intelligently figure out the minimal number of components to re-render and apply the minimal amount of DOM manipulations when the app state changes.
If you are familiar with Virtual DOM concepts and prefer the raw power of JavaScript, you can also directly write render functions instead of templates, with optional JSX support.
View the rest of this section here
v-if
The directive v-if
is used to conditionally render a block. The block will only be rendered if the directive’s expression returns a truthy value.

Vue is awesome!

It is also possible to add an “else block” with v-else
:

Vue is awesome!

Oh no 😢

View the rest of this section here
Listening to Events
We can use the v-on directive to listen to DOM events and run some JavaScript when they’re triggered
For example:
HTML

<button v-on:click="counter += 1">Add 1</button>

The button above has been clicked {{ counter }} times.

Javascript
var example1 = new Vue({
el: '#example-1',
data: {
counter: 0
}
})
Result
The button above has been clicked {{ counter }} times.
Method Event Handlers
The logic for many event handlers will be more complex though, so keeping your JavaScript in the value of the v-on attribute isn’t feasible. That’s why v-on can also accept the name of a method you’d like to call.
For example:
HTML

<button v-on:click="greet">Greet</button>

Javascript
var example2 = new Vue({
el: '#example-2',
data: {
name: 'Vue.js'
},
// define methods under the `methods` object
methods: {
greet: function (event) {
// `this` inside methods points to the Vue instance
alert('Hello ' + this.name + '!')
// `event` is the native DOM event
if (event) {
alert(event.target.tagName)
}
}
}
})
// you can invoke methods in JavaScript too
example2.greet() // => 'Hello Vue.js!'
Result
View the rest of this section here
Everthing in this page is taken from the Vue.js Docs HERE


UIDragDropItem is a base script for your own Drag & Drop operations.
More...
UIDragDropItem is a base script for your own Drag & Drop operations.
| Enumerator |
|---|
| None |
|
| Horizontal |
|
| Vertical |
|
| PressAndHold |
|
| IEnumerator UIDragDropItem.EnableDragScrollView |
( |
| ) |
|
|
protected |
| virtual void UIDragDropItem.OnDrag |
( |
Vector2 |
delta | ) |
|
|
protectedvirtual |
| virtual void UIDragDropItem.OnDragDropEnd |
( |
| ) |
|
|
protectedvirtual |
Function called when the object gets reparented after the drop operation finishes.
| virtual void UIDragDropItem.OnDragDropMove |
( |
Vector2 |
delta | ) |
|
|
protectedvirtual |
Adjust the dragged object's position.
| virtual void UIDragDropItem.OnDragDropRelease |
( |
GameObject |
surface | ) |
|
|
protectedvirtual |
Drop the item onto the specified object.
| virtual void UIDragDropItem.OnDragDropStart |
( |
| ) |
|
|
protectedvirtual |
Perform any logic related to starting the drag & drop operation.
| virtual void UIDragDropItem.OnDragEnd |
( |
| ) |
|
|
protectedvirtual |
Notification sent when the drag event has ended.
| virtual void UIDragDropItem.OnDragStart |
( |
| ) |
|
|
protectedvirtual |
Start the dragging operation.
| virtual void UIDragDropItem.OnPress |
( |
bool |
isPressed | ) |
|
|
protectedvirtual |
Record the time the item was pressed on.
| virtual void UIDragDropItem.Start |
( |
| ) |
|
|
protectedvirtual |
| virtual void UIDragDropItem.StartDragging |
( |
| ) |
|
|
protectedvirtual |
Start the dragging operation.
| void UIDragDropItem.StopDragging |
( |
GameObject |
go | ) |
|
| virtual void UIDragDropItem.Update |
( |
| ) |
|
|
protectedvirtual |
Start the dragging operation after the item was held for a while.
| bool UIDragDropItem.cloneOnDrag = false |
Whether a copy of the item will be dragged instead of the item itself.
| bool UIDragDropItem.interactable = true |
Whether this drag & drop item can be interacted with.
If not, only tooltips will work.
| Collider UIDragDropItem.mCollider |
|
protected |
| Collider2D UIDragDropItem.mCollider2D |
|
protected |
| bool UIDragDropItem.mDragging = false |
|
protected |
| float UIDragDropItem.mDragStartTime = 0f |
|
protected |
| Transform UIDragDropItem.mParent |
|
protected |
| bool UIDragDropItem.mPressed = false |
|
protected |
| Transform UIDragDropItem.mTrans |
|
protected |
| float UIDragDropItem.pressAndHoldDelay = 1f |
How long the user has to press on an item before the drag action activates.
What kind of restriction is applied to the drag & drop logic before dragging is made possible.
The documentation for this class was generated from the following file: