Autonomous driving using three simple vision algorithms
The purpose of this post is to familiarize the reader with three vision algorithms used for a simple autonomous driving algorithm.
Autonomous driving is a very complicated subject. To make a car drive fully autonomously, big neural networks, machine learning and a lot of engineering needs to be applied. A very rudamentary autonomous driving algorithm can be created using three vision algorithms described in this post. The efficiency of this approach is very low, but it does not require any knowledge of artificial intelligence to be used.
The goal of the algorithm is to drive along the road and control the speed accordingly to curves ahead. To see the algorithm in action an environment is going to be needed. Since testing in real world is expensive, complicated and probably illegal, a virtual environment is going to be used. There is a lot to choose from: Carla, AirSim, or any other driving game that has basic programming support, like GTAV with ScriptHook or Live for speed.
Since the purpose of this blog entry is to focus on autonomous driving, obvious parts of the application are skipped (screen grabbing, simulation parameters reading and control override). You can look it up in the source here: AutoCruise.
The algorithm workflow uses three vision algorithms stacked on eachother: Perspective, Sobel and finally Sliding window.
Perspective
First algorithm used in the workflow is perspective transformation. It creates a birds-eye view from drivers point of view. The purpose of it is that it is far easier to find road edges and lanes as they will be parallel instead of converging to the vanishing point.
The perspective transformation is a 3D transformation of the view pane, such that lower parts of the image will be put farther from observer point of view, while the upper parts will be closer.
Such transformation can be achieved by creating transformation matrix manually or use FindHomography() function from opencv library. Using the second approach, the lower part of input image needs to be squeezed to counter the perspective projection of 3D world to 2D pane viewed from driver point of view:
With transformation matrix returned from FindHomography() new position of each pixel can be calculated from source image:
…or simply use opencv WarpPerspective() function, thus creating a perspective transformed image.
Sobel
The perspective transformed image is fed to next algorithm in workflow: an edge finding algorithm, Sobel. Its purpose is to highlight image edges that should be “interesting and meaningful” for driving algorithm. It will highlight image edges that distinguish themselves in x-axis in comparison to background noise.
For learning purposes, the focus will be put on part of the image where a clear lane marking can be seen. Note that we are working on grey image, so each pixel is represented as 8-bit value with range from 0 to 255.
It can be clearly seen that values go up from 119 to 149. Sobel algorithm transforms the image by comparing each pixels value to its right neighbor, therefor creating a difference map in form of an image which contains result of subtracting each pixels value to its right neighbor. Since the difference can be positive as well as negative, the result of subtraction is added to 128 (perfect grey color) so that the edge will be brighter if right neighbor pixel was brighter and darker edge in other case.
To increase effectiveness of highlighting distinguished image edges a parameter called kernel has been introduced which compares a set of pixels to neighboring set of pixels in form of rectangle with side length of the kernel. This operation results in image that contains only edges that are highly distinguishable.
Sliding window algorithm
The last vision algorithm used in the workflow is Sliding window algorithm. Its purpose is to track image edges that are highly likely the road edges. This algorithm is quite resistant to image noise but not that accurate - just enough for purpose of a simple autonomous driving algorithm.
Starting point of the Sliding window algorithm is placing a search window (of preconfigured size) in place where a lane should be present: the front end corner of the car. Next, the window is slidden upwards along the most distinguishable edge. Every time the window is moved upwards (by its height size) from its last position, a new horizontal position is calculated by weighted average on x-axis: the more pixels (with bigger values) are found on horizontal position inside the window, the more windows new position will be close to this position (in x-axis). Repeat this until the search window goes out of bounds of the image.
After both left and right sliding windows have been moved to the upper boundaries of the input image, two paths have been created which should represent the road edges.
Driving algorithm
With the (probable) road edges found, a rudamentary driving algorithm is used: keep a steady 50kmh speed and slow down proportionally to lane curvature and steer to keep the car between the lanes. Driving precisely between the found lane edges needs to include steering parallelly to them. This needs a lot of experiments to dial steering right if done manually. To make most out of this approach, machine learning should be used with pre-recorded driving data. This way the algorithm should be able to clone the recorded driving style, but that is a topic for another blog entry.
The final result looks like this:


{% extends "base.html" %} {% block title %}Home{% endblock %} {% block content %}
A game jam is an event during which all participants create games according to a provided theme within a short amount of time (usually between two days to a week). The Reddit Game Jam hosts game jams as part of the wonderful Reddit community.
Anybody can participate, experienced or newbie, flash developer or C hacker.
The main goal of this game jam is to be a learning experience for everyone involved. There is nothing to win except for fame, comments and of course karma.
Feel free to register and participate. Please link your account with your reddit account (i.e. use the same nickname). If you are not already on reddit, go there and join.
More questions? Read the FAQ.
There are no active jams right now.
There have not been any jams yet.


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Home
Radio
Badi
lab
About
Home Automation UI:
V0.1
Posthuman Production


| < Day Day Up > |
12.3 Probability RulesFormal probability theory includes several rules that govern how probabilities are calculated. We'll go over these rules here to lay some groundwork for the next chapter. Although we've already discussed a few of these rules, we'll restate them again here for completeness. In the discussion that follows, we state the rules in general terms and don't provide specific examples. We will, however, see these rules in action in the next chapter. If you're interested in seeing specific examples of each rule, you can refer to any introductory-level book on probability. 12.2.9 Rule 1This rule states the probability of an event, P(A), must be a real number between 0 and 1, inclusive. This rule serves to constrain the range of values assigned to probabilities. On one end of the scale we can't have a negative probability, while on the other end the probability of an event can't be greater than 1, which implies absolute certainty that the event will occur. 12.2.10 Rule 2As sort of an extension of rule 1, if S represents the entire sample space for the event, the probability of S equals 1. This says that because the sample space includes all possible outcomes, there is a 100% probability that one of the outcomes therein will occur. Here, it helps to visualize the sample space and events using Venn diagrams. Figure 12-3 illustrates a Venn diagram for the sample space S and events A and B within that sample space. Figure 12-3. Venn diagramThe dots represent samples taken within the space, and the relative sizes of the circles for A and B indicate their relative probabilities—more specifically, their areas indicate their probabilities. 12.2.11 Rule 3If the probability that an event, A, will occur is P(A) and the event that A will not occur is designated A', the probability of the event not occurring, P(A'), is 1- P(A). This rule simply states that an event either occurs or does not occur and the probability of this event either occurring or not occurring is 1—that is, we can say with certainty the event either will occur or will not occur. Figure 12-4 illustrates events A and Aapos; on a Venn diagram. Figure 12-4. P(A) versus P(A')Clearly, event Aapos; covers all of the area within the sample space S that falls outside of event A. 12.2.12 Rule 4This rule states that if two events A and B are mutually exclusive, only one of them can occur at a given time. For example, in a game, the events creature is dead and creature is alive are mutually exclusive. The creature cannot be both dead and alive at the same time. Figure 12-5 illustrates two mutually exclusive events A and B. Figure 12-5. Mutually exclusive eventsNote that the areas representing these two events do not overlap. For two mutually exclusive events, A and B, the probability of event A or event B occurring is as follows: where P(A B) is the probability of event A or event B, the probability that one or the other occurs, and P(A) and P(B) are the probabilities of events A and B, respectively. You can generalize this rule for more than two mutually exclusive events. For example, if A, B, C, and D are four mutually exclusive events, the probability that A or B or C or D occurs is: Theoretically you can generalize this to any number of mutually exclusive events. 12.2.13 Rule 5This rule states that if the events under consideration are not mutually exclusive, we need to revise the formulas discussed in rule 4. For example, in a game a given creature can be alive, dead, or injured. Although alive and dead are mutually exclusive, alive and injured are not. The creature can be alive and injured at the same time. Figure 12-6 shows two nonmutually exclusive events. Figure 12-6. Nonmutually exclusive eventsIn this case, the areas for events A and B overlap. This means that event A can occur or event B can occur or both events A and B can occur simultaneously. The shaded area in Figure 12-5 indicates the probability that both A and B occur together. Therefore, to calculate the probability of event A or event B occurring in this case, we use the following formula: In this formula, P(A B) is the probability that both A and B occur. You also can generalize this formula to more than two nonmutually exclusive events. Figure 12-7 illustrates three events, A, B, and C, that are not mutually exclusive. Figure 12-7. Three nonmutually exclusive eventsTo calculate the probability of A or B or C we need to calculate the probability corresponding to the shaded region in Figure 12-7. The formula that achieves this is as follows: 12.2.14 Rule 6This rule states that if two events, A and B, are independent—that is, the occurrence of one event does not depend on the occurrence or nonoccurrence of the other event—the probability of events A and B both occurring is as follows: For example, two independent events in a game can be player encounters a wandering monster and player is building a fire. The occurrence of either of these events is independent of the occurrence of the other event. Now consider another event, player is chopping wood. In this case, the event player encounters a wandering monster might very well depend on whether the player is chopping wood. These events are not independent. By chopping wood, the player presumably is in a forest, which increases the likelihood of him encountering a wandering monster. Referring to Figure12-6, this probability corresponds to the shaded region shared by events A and B. If events A and B are not independent, we must deal with the so-called conditional probability of these events. The preceding formula does not apply in the conditional case. The rule governing conditional probabilities is so important, especially in the context of Bayesian analysis, we're going to discuss it next in its own section. |
| < Day Day Up > |


West Indies batsman banned for ball tampering
New Delhi - West Indies batsman Nicholas Pooran has been banned for four T20 internationals for tampering with the ball in a one-day match against Afghanistan, cricket's world body announced Wednesday.
Pooran admitted to "changing the condition of the ball" after video footage showed him scratching the surface of the white ball with his thumbnail in Lucknow on Monday.
"He will now miss the next four T20I games for the West Indies and will have five demerit points added to his record," said an International Cricket Council statement.
Pooran said that he wanted to "issue a sincere apology to my teammates, supporters and the Afghanistan team for what transpired on the field of play on Monday in Lucknow".
"I recognise that I made an extreme error in judgement and I fully accept the ICC penalty," he added.
"I want to assure everyone that this is an isolated incident and it will not be repeated. I promise to learn from this and come back stronger and wiser."
The 24-year-old will be forced to sit out the team's three T20 matches against Afghanistan and the first game of their subsequent three-match series against India.
Pooran, who made 21 in a successful West Indies chase of 250 that led to a sweep of the three-match ODI series, is a left-handed wicketkeeper batsman.
He was the man of the match in the second ODI for smashing 67 off 50 balls.
Born in Trinidad, Pooran has played 16 ODI matches since his 50-over debut earlier this year. He has represented West Indies in 14 T20 games.


A domain name is an identification string that defines a realm of administrative autonomy, authority or control within the Internet. Domain names are used in various networking contexts and for application-specific naming and addressing purposes. In general, a domain name identifies a network domain, or it represents an Internet Protocol (IP) resource, such as a personal computer used to access the Internet, a server computer hosting a website, or the web site itself or any other service communicated via the Internet. In 2017, 330.6 million domain names had been registered.[1]
Domain names are formed by the rules and procedures of the Domain Name System (DNS). Any name registered in the DNS is a domain name. Domain names are organized in subordinate levels (subdomains) of the DNS root domain, which is nameless. The first-level set of domain names are the top-level domains (TLDs), including the generic top-level domains (gTLDs), such as the prominent domains com, info, net, edu, and org, and the country code top-level domains (ccTLDs). Below these top-level domains in the DNS hierarchy are the second-level and third-level domain names that are typically open for reservation by end-users who wish to connect local area networks to the Internet, create other publicly accessible Internet resources or run web sites.
The Internet Corporation for Assigned Names and Numbers is an American multi-stakeholder group and nonprofit organization that is responsible for coordinating the maintenance and procedures of several databases related to the namespaces and numerical spaces of the Internet, which ensures the network's stable and secure operation. ICANN performs the actual technical maintenance work of the Central Internet Address pools and DNS root zone registries pursuant to the Internet Assigned Numbers Authority (IANA) function contract.
ICANN's primary is there to help preserve the operational stability of the Internet; to promote competition; to achieve broad representation of the global Internet community.


http://code.google.com/p/fuzzdb/
http://www.owasp.org/index.php/Category:OWASP_Fuzzing_Code_Database#tab=Statements
https://github.com/swisskyrepo/PayloadsAllTheThings
https://github.com/cr0hn/nosqlinjection_wordlists (nosql / mongodb strings)
LFI
https://web.archive.org/web/20170107043916/pastie.org/840199#1
https://github.com/tennc/fuzzdb/blob/master/dict/BURP-PayLoad/LFI/LFI_InterestingFiles-NullByteAdded.txt
list of interesting files on Linux
list of interesting files on Windows
Database Table Names:
http://raz0r.name/wp-content/uploads/2008/06/common_tbl.txt
(De)Serialize Java
http://jackson.thuraisamy.me/runtime-exec-payloads.html
https://hackvertor.co.uk/public <- Tool to use
Link to Payloads / Lists / Attack Strings > Lists


|
libcoap
4.3.0
|
Internal API functions for Application Input / Output. More...
Functions | |
| unsigned int | coap_io_prepare_io (coap_context_t *ctx, coap_socket_t *sockets[], unsigned int max_sockets, unsigned int *num_sockets, coap_tick_t now) |
Iterates through all the coap_socket_t structures embedded in endpoints or sessions associated with the ctx to determine which are wanting any read, write, accept or connect I/O (COAP_SOCKET_WANT_xxx is set). More... | |
| void | coap_io_do_io (coap_context_t *ctx, coap_tick_t now) |
Processes any outstanding read, write, accept or connect I/O as indicated in the coap_socket_t structures (COAP_SOCKET_CAN_xxx set) embedded in endpoints or sessions associated with ctx . More... | |
| unsigned int | coap_io_prepare_epoll (coap_context_t *ctx, coap_tick_t now) |
| Any now timed out delayed packet is transmitted, along with any packets associated with requested observable response. More... | |
| void | coap_io_do_epoll (coap_context_t *ctx, struct epoll_event *events, size_t nevents) |
| Process all the epoll events. More... | |
Internal API functions for Application Input / Output.
| void coap_io_do_epoll | ( | coap_context_t * | ctx, |
| struct epoll_event * | events, | ||
| size_t | nevents | ||
| ) |
Process all the epoll events.
Note: If epoll support is compiled into libcoap, coap_io_do_epoll() must be used instead of coap_io_do_io().
Internal function
| ctx | The current CoAP context. |
| events | The list of events returned from an epoll_wait() call. |
| nevents | The number of events. |
Definition at line 1799 of file net.c.
| void coap_io_do_io | ( | coap_context_t * | ctx, |
| coap_tick_t | now | ||
| ) |
Processes any outstanding read, write, accept or connect I/O as indicated in the coap_socket_t structures (COAP_SOCKET_CAN_xxx set) embedded in endpoints or sessions associated with ctx
.
Note: If epoll support is compiled into libcoap, coap_io_do_epoll() must be used instead of coap_io_do_io().
Internal function.
| ctx | The CoAP context |
| now | Current time |
Definition at line 1738 of file net.c.
| unsigned int coap_io_prepare_epoll | ( | coap_context_t * | ctx, |
| coap_tick_t | now | ||
| ) |
Any now timed out delayed packet is transmitted, along with any packets associated with requested observable response.
In addition, it returns when the next expected I/O is expected to take place (e.g. a packet retransmit).
Note: If epoll support is compiled into libcoap, coap_io_prepare_epoll() must be used instead of coap_io_prepare_io().
Internal function.
| ctx | The CoAP context |
| now | Current time. |
Definition at line 1007 of file coap_io.c.
| unsigned int coap_io_prepare_io | ( | coap_context_t * | ctx, |
| coap_socket_t * | sockets[], | ||
| unsigned int | max_sockets, | ||
| unsigned int * | num_sockets, | ||
| coap_tick_t | now | ||
| ) |
Iterates through all the coap_socket_t structures embedded in endpoints or sessions associated with the ctx
to determine which are wanting any read, write, accept or connect I/O (COAP_SOCKET_WANT_xxx is set).
If set, the coap_socket_t is added to the sockets
.
Any now timed out delayed packet is transmitted, along with any packets associated with requested observable response.
In addition, it returns when the next expected I/O is expected to take place (e.g. a packet retransmit).
Prior to calling coap_io_do_io(), the sockets
must be tested to see if any of the COAP_SOCKET_WANT_xxx have the appropriate information and if so, COAP_SOCKET_CAN_xxx is set. This typically will be done after using a select() call.
Note: If epoll support is compiled into libcoap, coap_io_prepare_epoll() must be used instead of coap_io_prepare_io().
Internal function.
| ctx | The CoAP context |
| sockets | Array of socket descriptors, filled on output |
| max_sockets | Size of socket array. |
| num_sockets | Pointer to the number of valid entries in the socket arrays on output. |
| now | Current time. |
Definition at line 1059 of file coap_io.c.


{% extends 'weblab-master.html' %} {% block body %}
{{ gettext("Select a group:") }}
{{ gettext("It seems that you don't have permission of teacher on any group (or there is no group in the system)") }}


Well Hello!
Kyanon Digital is digital production outsourcing company based on Ho Chi Minh City, Vietnam. Our scalable pool of talent boasts a diverse range of experience from the digital outsourcing industry. The proven processes and standards further complement our approach to digital outsourcing and, as a result, we are able to offer an extensive range of services to our clients. Be one of companies brings and applies Agile in software development cycle successfully; we have helped our clients to improve productivity, efficiency and offer them products with best performance.
Kyanon Digital always have openings for talented developers who are excited by the challenge of building highly scalable software solutions that can support customers globally. If you’re willing to share passion and keen on broadening your own knowledge, Kyanon Digital would be your perfect opportunity.


Writing SimpleRPC Clients
Writing SimpleRPC Clients
- Writing SimpleRPC Clients
- The Basic Client
- Call an Agent and print the result
- Adjusting the output
- Applying filters programatically
- Resetting filters to empty
- Forcing Rediscovery
- Only sending requests to a subset of discovered nodes
- Gaining access to the full MCollective::Client
- Dealing with the results directly
- Adding custom command line options
- Disabling command line parsing and supplying your options programatically
- Sending SimpleRPC requests without discovery and blocking
- Doing your own discovery
- The rpcutil Helper Agent
As pointed out in the SimpleRPCIntroduction page you can use the mco rpc CLI to call agents and it will do it’s best to print results in a sane way. When this is not enough you can write your own clients.
Simple RPC clients can do most of what a normal client can do but it makes a lot of things much easier if you stick to the Simple RPC conventions.
This guide shows how to write standalone scripts to interact with your collective. Since version 1.1.1 there is a single executable system. You can apply most of the techniques documented here to writing plugins for that application system. See the full reference for the plugin system here. You should try to write your general agent CLIs using this plugin system rather than the stand alone scripts detailed below as that promote a unified interface that behave in a consistant manner.
We’ve recorded a tutorial that will give you a quick look at what is involved in writing agents and a very simple client.
We’ll walk through building a ever more complex example of Hello World here.
The Basic Client
The client is mostly a bunch of helper methods that you use as a Ruby Mixin in your own code, it provides:
- Standard command line option parsing with help output
- Ability to add your own command line options
- Simple access to agents and actions
- Tools to help you print results
- Tools to print stats
- Tools to construct your own filters
- While retaining full power of MCollective::Client if you need the additional feature sets
- And being as simple or as complex to match your level of code proficiency
We’ll write a client for the Helloworld agent that you saw in the SimpleRPCIntroduction.
Call an Agent and print the result
A basic hello world client can be seen below:
1 #!/usr/bin/ruby
2
3 require 'mcollective'
4
5 include MCollective::RPC
6
7 mc = rpcclient("helloworld")
8
9 printrpc mc.echo(:msg => "Welcome to MCollective Simple RPC")
10
11 printrpcstats
12
13 mc.disconnect
Save this into hello.rb and run it with –help, you should see the standard basic help including filters for discovery.
If you’ve set up the Agent and run the client you should see something along these lines:
$ hello.rb
Finished processing 44 hosts in 375.57 ms
While it ran you would have seen a little progress bar and then just the summary line. The idea is that if you’re talking to a 1000 machine there’s no point in seeing a thousand OK, you only want to see what failed and this is exactly what happens here, you’re only seeing errors.
If you run it with –verbose you’ll see a line of text for every host and also a larger summary of results.
I’ll explain each major line in the code below then add some more features from there:
include MCollective::RPC
mc = rpcclient("helloworld")
The first line pulls in the various helper functions that we provide, this is the Mixin we mentioned earlier.
We then create a new client to the agent “helloworld” that you access through the mc variable.
printrpc mc.echo(:msg => "Welcome to MCollective Simple RPC")
printrpcstats
To call a specific action you simply have to do mc.echo this calls the echo action, we pass a :msg parameter into it with the string we want echo’d back. The parameters will differ from action to action. It returns a simple array of the results that you can print any way you want, we’ll show that later.
printrpc and printrpcstats are functions used to print the results and stats respectively.
mc.disconnect
This cleanly disconnects the client from the middleware, some middleware tools like ActiveMQ will log confusing exceptions if you do not do this. It’s good form to always disconnect but isn’t strictly required.
Adjusting the output
Verbosely displaying results
As you see there’s no indication that discovery is happening and as pointed out we do not display results that are ok, you can force verbosity as below on individual requests:
mc = rpcclient("helloworld")
mc.discover :verbose => true
printrpc mc.echo(:msg => "Welcome to MCollective Simple RPC"), :verbose => true
Here we’ve added a :verbose flag and we’ve specifically called the discover method. Usually you don’t need to call discover it will do it on demand. Doing it this way you’ll always see the line:
Determining the amount of hosts matching filter for 2 seconds .... 44
Passing verbose to printrpc forces it to print all the results, failures or not.
If you just wanted to force verbose on for all client interactions, do:
mc = rpcclient("helloworld")
mc.verbose = true
printrpc mc.echo(:msg => "Welcome to MCollective Simple RPC")
In this case everything will be verbose, regardless of command line options.
Disabling the progress indicator
You can disable the twirling progress indicator easily:
mc = rpcclient("helloworld")
mc.progress = false
Now whenever you call an action you will not see the progress indicator.
Saving the reports in variables without printing
As of version 0.4.5 you can retrieve the stats from the clients and also get text of reports without printing them:
stats = mc.echo(:msg => "Welcome to MCollective Simple RPC").stats
report = stats.report
report will now have the text that would have been displayed by ‘printrpcstats’ you can also use no_response_report to get report text for just the list of hosts that didnt respond.
If you didn’t want to just print the results out to STDOUT you can also get them back as just text:
report = rpcresults mc.echo(:msg => "Welcome to MCollective Simple RPC")
Applying filters programatically
You can pass filters on the command line using the normal –with-*
options but you can also do it programatically. Here’s a new version of the client that only calls machines with the configuration management class /dev_server/ and the fact country=uk
mc = rpcclient("helloworld")
mc.class_filter /dev_server/
mc.fact_filter "country", "uk"
printrpc mc.echo(:msg => "Welcome to MCollective Simple RPC")
You can set other filters like agent_
filter and identity_
filter.
As of version 1.1.0 the fact_filter method supports a few other forms in adition to above:
mc.fact_filter "country=uk"
mc.fact_filter "physicalprocessorcount", "4", ">="
This will limit it to all machines in the UK with more than 3 processors.
Resetting filters to empty
If while using the client you wish to reset the filters to an empty set of filters - containing only the agent name that you’re busy addressing you can do it as follows:
mc = rpcclient("helloworld")
mc.class_filter /dev_server/
mc.reset_filter
After this code snippet the filter will only have an agent filter of helloworld set.
Forcing Rediscovery
By default it will only do discovery once per script and then re-use the results, you can though force rediscovery if you had to adjust filters mid run for example.
mc = rpcclient("helloworld")
mc.class_filter /dev_server/
printrpc mc.echo(:msg => "Welcome to MCollective Simple RPC")
mc.reset
mc.fact_filter "country", "uk"
printrpc mc.echo(:msg => "Welcome to MCollective Simple RPC")
Here we make one echo call - which would do a discovery - we then reset the client, adjust filters and call it again. The 2nd call would do a new discovery and have new client lists etc.
Only sending requests to a subset of discovered nodes
By default all nodes that get discovered will get the request. This isn’t always desirable maybe you want to deploy only to a random subset of hosts or maybe you have a service exposed over MCollective that you want to treat as a HA service and so only speak with one host that provides the functionality.
You can limit the hosts to talk to either using a number or a percentage, the code below shows both:
mc = rpcclient("helloworld")
mc.limit_targets = "10%"
printrpc mc.echo(:msg => "Welcome to MCollective Simple RPC")
This will pick 10% of the discovered hosts - or 1 if 10% is less than 1 - and only target those nodes with your request. You can also set it to an integer.
This functionality is only available from version 1.0.0 and newer.
Gaining access to the full MCollective::Client
If you wanted to work with the Client directly as in WritingAgents after perhaps setting up some queries or gathering data first you can gain access to the client, you might also need access to the options array that was parsed out from the command line and any subsequent filters that you added.
mc = rpcclient("helloworld")
client = mc.client
options = mc.options
The first call will set up the CLI option parsing, create clients etc, you can then just grab the client and options and go on as per WritingAgents. This is a much quicker way to write full power clients, by just by short-circuiting the options parsing etc.
Dealing with the results directly
The biggest reason that you’d write custom clients is probably if you wanted to do custom processing of the results, there are 2 options to do it.
Results and Exceptions
Results have a set structure and depending on how you access the results you will either get Exceptions or result codes.
| Status Code | Description | Exception Class |
|---|---|---|
| 0 | OK | |
| 1 | OK, failed. All the data parsed ok, we have a action matching the request but the requested action could not be completed. | RPCAborted |
| 2 | Unknown action | UnknownRPCAction |
| 3 | Missing data | MissingRPCData |
| 4 | Invalid data | InvalidRPCData |
| 5 | Other error | UnknownRPCError |
Just note these now, I’ll reference them later down.
Simple RPC style results
Simple RPC provides a trimmed down version of results from the basic Client library. You’d choose to use this if you just want to do simple things or maybe you’re just learning Ruby. You’ll get to process the results after the call is either done or timed out completely.
This is an important difference between the two approaches, in one you can parse the results as it comes in, in the other you will only get results after processing is done. This would be the main driving facter for choosing one over the other.
Here’s an example that will print out results in a custom way.
mc.echo(:msg => "hello world").each do |resp|
printf("%-40s: %s\n", resp[:sender], resp[:data])
end
This will produce a result something like this:
dev1.you.net : hello world
dev2.you.net : hello world
dev3.you.net : hello world
The each in the above code just loops through the array of results. Results are an array of Hashes, the data you got for above has the following structure:
[{:statusmsg=>"OK",
:sender=>"dev1.your.net",
:data=>"hello world",
:statuscode=>0},
{:statusmsg=>"OK",
:sender=>"dev2.your.net",
:data=>"hello world",
:statuscode=>0}]
The :statuscode matches the table above so you can make decisions based on each result’s status.
Gaining access to MCollective::Client#req results
You can get access to each result in real time, in this case you will need to handle the exceptions in the table above and you’ll get a different style of result set. The result set will be exactly as from the full blown client.
In this mode there will be no progress indicator, you’ll deal with results as and when they come in not after the fact as in the previous example.
mc.echo(:msg => "hello world") do |resp|
begin
printf("%-40s: %s\n", resp[:senderid], resp[:body][:data])
rescue RPCError => e
puts "The RPC agent returned an error: #{e}"
end
end
The output will be the same as above
In this mode the results you get will be like this:
{:msgtarget=>"/topic/mcollective.helloworld.reply",
:senderid=>"dev2.your.net",
:msgtime=>1261696663,
:hash=>"2d37daf690c4bcef5b5380b1e0c55f0c",
:body=>{:statusmsg=>"OK", :statuscode=>0, :data=>"hello world"},
:requestid=>"2884afb0b52cb38ea4d4a3146d18ef5f",
:senderagent=>"helloworld"}
Note how here we need to catch the exceptions, just handing :statuscode will not be enough as the RPC client will raise exceptions - all descendant from RPCError so you can easily catch just those.
As of version 1.1.1 you can additionally gain access to a SimpleRPC style result in addition to the more complex native client results:
mc.echo(:msg => "hello world") do |resp, simpleresp|
begin
printf("%-40s: %s\n", simpleresp[:sender], simpleresp[:data])
rescue RPCError => e
puts "The RPC agent returned an error: #{e}"
end
end
You can still use printrpc to print these style of results and gain advantage of the DDL and so forth:
mc.echo(:msg => "hello world") do |resp, simpleresp|
begin
printrpc simpleresp
rescue RPCError => e
puts "The RPC agent returned an error: #{e}"
end
end
You will need to handle exceptions yourself but you have a simpler result set to deal with
Adding custom command line options
You can look at the mco rpc script for a big sample, here I am just adding a simple –msg option to our script so you can customize the message that will be sent and received.
1 #!/usr/bin/ruby
2
3 require 'mcollective'
4
5 include MCollective::RPC
6
7 options = rpcoptions do |parser, options|
8 parser.define_head "Generic Echo Client"
9 parser.banner = "Usage: hello [options] [filters] --msg MSG"
10
11 parser.on('-m', '--msg MSG', 'Message to pass') do |v|
12 options[:msg] = v
13 end
14 end
15
16 unless options.include?(:msg)
17 puts("You need to specify a message with --msg")
18 exit! 1
19 end
20
21 mc = rpcclient("helloworld", :options => options)
22
23 mc.echo(:msg => options[:msg]).each do |resp|
24 printf("%-40s: %s\n", resp[:sender], resp[:data])
25 end
This version of the code should be run like this:
% test.rb --msg foo
dev1.you.net : foo
dev2.you.net : foo
dev3.you.net : foo
Documentation for the Options Parser can be found in it’s code.
And finally if you add options as above rather than try to parse it yourself you will get help integration for free:
% hello.rb --help
Usage: hello [options] [filters] --msg MSG
Generic Echo Client
-m, --msg MSG Message to pass
Common Options
-c, --config FILE Load configuratuion from file rather than default
--dt SECONDS Timeout for doing discovery
--discovery-timeout
-t, --timeout SECONDS Timeout for calling remote agents
-q, --quiet Do not be verbose
-v, --verbose Be verbose
-h, --help Display this screen
Host Filters
--wf, --with-fact fact=val Match hosts with a certain fact
--wc, --with-class CLASS Match hosts with a certain configuration management class
--wa, --with-agent AGENT Match hosts with a certain agent
--wi, --with-identity IDENT Match hosts with a certain configured identity
Disabling command line parsing and supplying your options programatically
Sometimes, perhaps when embedding an MCollective client into another tool like Puppet, you do not want MCollective to do any command line parsing as there might be conflicting command line options etc.
This can be achieved by supplying an options hash to the SimpleRPC client:
include MCollective::RPC
options = MCollective::Util.default_options
client = rpcclient("test", {:options => options})
This will create a RPC client for the agent test without any options parsing at all.
To set options like discovery timeout and so forth you will need use either the client utilities or manipulate the hash upfront, the client utility methods is the best. The code below sets the discovery timeout in a way that does not require you to know any internal structures or the content of the options hash.
options = MCollective::Util.default_options
client = rpcclient("test", {:options => options})
client.discovery_timeout = 4
Using this method of creating custom options hashes mean we can make internal changes to MCollective without affecting your code in the future.
Sending SimpleRPC requests without discovery and blocking
Usually this section will not apply to you. The client libraries support sending a request without waiting for a reply. This could be useful if you want to clean yum caches but don’t really care if it actually happens everywhere.
You will loose these abilities:
- Knowing if your request was received by any agents
- Any stats about processing times etc
- Any information about the success or failure of your request
The above should make it clear already that this is a limited use case, it’s essentially a broadcast request with no feedback loop.
The code below will send a request to the runonce action for an agent puppetd, once the request is dispatched I will have no idea if it got handled etc, my code will just continue onwards.
p = rpcclient("puppetd")
p.identity_filter "your.box.com"
reqid = p.runonce(:forcerun => true, :process_results => false)
This will honor any attached filters set either programatically or through the command line, it will send the request but will just not handle any responses. All it will do is return the request id.
Doing your own discovery
For web applications you’d probably use cached copied of Registration data to do discovery rather than wait for MC to do discovery between each request.
To do this, you’ll need to construct a filter and a list of expected hosts and then do a custom call:
puppet = rpcclient("puppetd")
printrpc puppet.custom_request("runonce", {:forcerun => true}, "your.box.com", {"identity" => "your.box.com"})
This will do a call with exactly the same stats, block and other semantics as a normal call like:
printrpc puppet.runonce(:forcerun => true)
But instead of doing any discovery it will use the host list and filter you supplied in the call.
The rpcutil Helper Agent
A helper agent called rpcutil is included from version 0.4.9 onward that helps you gather stats, inventory etc about the running daemon.


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LazyNav:
Virtual 3D Ground Navigation for Large Displays and Head-Mounted Displays
With the growing interest in natural input devices and virtual reality, mid-air ground navigation is becoming a fundamental interaction for a large collection of application scenarios. While classical input devices (e.g., mouse/keyboard, gamepad, touchscreen) have their own ground navigation standards, natural input techniques still lack acknowledged mechanisms for travelling in a 3D scene. In particular, for most applications, navigation is not the primary interaction. Thus, the user should navigate in the scene while still being able to perform other interactions with her hands, and observe the displayed content by moving her eyes and locally rotating her head.
Figure 1:
We performed a user study to evaluate several ground navigation metaphors. (a) A top view of the virtual environment includes the path use ina formal user study, participants have to follow the path as accurate as possible. (b) A field of view inside a HMD based user study. (c) At the begin-ning of the session, the available motions are displayed to the participant. (d-e), A user is traveling in the scene with the LD and HMD settings whileholding a cup in his hand or carring a bag in his back.
Since most ground navigation scenarios require only two degrees of freedom to move forward or backward and rotate the view to the left or to the right, we propose LazyNav a mid-air ground navigation control model which lets the users hands, eyes or local head orientation completely free, making use of a single pair of the remaining tracked body elements to tailor the navigation. To this end, we design several navigation body motions and study their desired properties, such as being easy to discover, easy to control, socially acceptable, accurate and not tiring. We also develop several assumptions about motions design for ground navigation and evaluate them. Finally, we highlight general advices on mid-air ground navigation techniques.


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First of all, the importantest of them all, I need to thank Hevipelle. He had the idea for the game, we worked on it for a while,
and when he abandoned it he let me copy it to my own GitHub (that means here) and he just let me free of doing whatever I want with it.
Seriously, this game would not exist if he was not there. Thanks a lot Hevi. Also, in case you still don't know his main game yet,
go play
Antimatter Dimensions. I look at the code often when I'm not sure of what I'm doing, plus the game is just really fantastic.
I also have to thank db72432 on GitHub, who opened an issue on the original SpellMaster repo, saying that "we'd need a license (fork friendly if possible) to add content to it".
That was a nice motivation kick to actually not be lazy and work on it, because I didn't want another person to do this before me.
So yeah, thanks for your interest, you can still do a fork if you want to, but I can now say that I've done it first. HA.
Last thanks for now, thank you, whoever it was, to the person who posted the game while we were working on it on the Incremental Games subreddit.
People received it reeeeeeeally well, and it also helped me realise that this has potential.
Small sidenote: as of right now I haven't added anything new to the game (just did a couple "indev proofings" to make sure people don't break too many things while I work on it),
and I can't transfer your saves from Hevi's GitHub to mine. Plus we don't have exporting/importing. Anyway, game's not long as of right now, so it shouldn't be bad,
but hopefully I'll stay not-lazy and content will come. Also, balance right now is kinda unimportant to me (except for critical stuff), I just need to get content out.
Anyway, enjoy the ride, don't expect the game to stay as it is right now, changes are coming, stuff and things, yadda yadda, you can stop reading,
why are you still reading, no, seriously, don't, like, what?


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Code by @Foone, content by Sierra Online.
Thank you for playing Police Quest 2. Next time, be a little more careful.


{% block site_title %}{{ name }}{% endblock %}
Note that you can also explore the API from the command line, for instance
using the curl
command-line tool.
For example: curl -X {{ request.META.REQUEST_METHOD }} http://{{ request.META.HTTP_HOST }}{{ request.META.PATH_INFO }} -H "Accept: application/json"
{{ request.method }} {{ request.get_full_path }}
{{ content|safe }}
{% if post_form %}
{% with form=post_form %}
{% endwith %}
{% endif %}
{% with form=raw_data_post_form %}
{% endwith %}


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This service must be created with a secondary grid data model, which all actual data requests are delegated to.
But before providing this data to the service's own clients, it is sorted, according to the sort order defined
via the XSortableGridData
interface.
The service implementation is able to compare the default scalar types, plus strings.
For determining the data type of a column which the data should be sorted by, the first non-void data encountered
in this column is taken into account. Further read requests to this column will assume that all non-void data is of
the same type.
Consequently, you cannot use this service with data sets containing heterogenous data in a given column.
All requests made via the XMutableGridDataModel are delegated to the XMutableGridDataModel
instance passed in the service constructor.
Note that changing the data might result in the sort order being destroyed. If you want to ensure
that the data represented by the model is still sorted after your modifications, you should call
XSortableGridData::sortByColumn, again.


Welcome 2013, may you be better than last year!
Happy new year to my readers!
良いお年を！
Good bye 2012!
We will remember you for the long overdue end of the world that did not happen.
メリークリスマス Merry Christmas
I wish you all a merry and peaceful christmas.
Olympics
So, the Olympic Games of London are over.
It was kinda hard to follow such an event,
especially when it was happening in a complete different timezone (9 hours later than Japan, in fact).
The Japanese coverage focussed on, obviously, Japanese olympians, but totally eclipsed all the other participating countries. The media deemed it not worthy to lose a single word on other medallists when they were not Japanese, nor did the media cover any sports where Japanese sportives did not take in, or where eliminated from.
Hence, the more interesting sports like Canoeing and Kayaking, Rowing, Beach Volleyball, Taekwondo, and a lot more were not even shown on (public) TV.
As a comparison, TV media in Germany is showing the whole event, unrelated to the sportives’ nation. (Especially when following the event on Eurosport).
So, I’m more than just pissed on these nationalistic media coverage of a major international sports event.
Next time, I’m gonna stream the events through a european proxy.
Summertime
It’s summer in Japan.
Meaning, it’s way too hot for
the typical Northern European human being.
Although, I do approve of the sun and the heat,
it’s hard to cope with those 80+% of ambient humidity.
Ah, the heat, especially when you’re in Tokyo, you’ll notice a couple of physical laws in action:
The reflection of sun rays on the glass surfaces, the concrete building, and finally on the asphalt, creating a kind of environmental oven to cook humans in it.
The hot air that gets blasted out by the “coolers” (climatisations), and that highly contributes to heating the lower atmosphere in the city.
The biological reaction to heat:
Well, humans sweat when it’s hot.
Meaning, all the corporal bacteriae get a nice extra feeding,
and as a result, proliferate.
And since the 20th century invention of “deodorant” has
not arrived in Japan yet to the point of being ubiqutious,
the Japanese men (mostly) are smelly.
But not the nice type of smelly,
but the rather inadequate type of bad corporal odor that makes the bystander want to puke.
Sadly, the trains are full of this type of “salarymen” (mostly),
so the only hope to survive a train ride in these conditions is to be tall enough (my case)
and to be standing below the overly cold air blaster in the train.
The ambient heat has one nice point, though:
the cute exemplary of Japanese females are wearing very short
and very light clothes. ;)
But the maybe biggest drawback of the heat is the heat induced unability of thorough sleep at night… In short: I want a new ice age!
h2. Tourist guide: Best places to spend the summer around Tokyo:
- shopping malls, department stores, everywhere where it’s climatised.
- Hokkaido. It has a different climate. (Ok, it’s NOT around Tokyo).
- The Shonan beaches, located on the backside of the Miyura peninsula (the backyard of Yokohama), and close to famours tourist spots like Kamakura and Enoshima. It’s also a short distance resolt to all people from Tokyo, and apparently a good mating sport for Westerners.
- The Kisarazu region and the beaches in the Chiba prefecture. Located just on the other side of the Tokyo bay. The southern cap is a nice spot for surfers.
- The samller islands of the Kanto region, like Ohshima. Also a very famous tourist spot, and hence potentially overcrowded.

It’s not me saying, but a couple of people said this 7 years ago, when there was still hope.
But today? There isn’t much left but companies struggling to survive.
Why do I care?
Because I grew up with Japanese games.
The first game I ever played when I was 3 was Namco’s Pacman. In school, I played Super Mario Land on my friends’ Gameboy and the reason I became a game programmer was SEGA’s Sonic The Hedgehog which made such a lasting impression on then 14 years old self that I decided to work in the games.
Later, I enjoyed several episodes of Squaresoft’s RPGs and A-RPGs, Final Fantasy, Chrono Trigger, Chrono Cross, Seiken Densetsu, not to forget the Megaman games, the Zelda games and all the other games I wasted my youth upon.
So yes, if only for this single reason, I do care about Japanese games. The games industry, that was once full of life and the garden of new and fresh game designs that inspired me. It’s be sad to see a “childhood friend” die like this.
But there’s the other reason, that now, I’m finally in Japan, working with a renouned game designer on “His Next Epic Masterpiece”.
What has happened?
In short, the games world has changed and Japanese game studios, or rather their workers, failed to adapt.
The long story (mostly my analysis of the facts) as follows:
http://xbox360.ign.com/articles/122/1221032p1.html http://press2reset.com/2012/03/19/analysis-is-japanese-innovation-really-dead/ http://blog.hardcoregaming101.net/2012/03/in-defense-of-japanese-gaming-industry.html http://www.giantbomb.com/news/keiji-inafunes-message-to-japanese-developers/4028/
http://www.destructoid.com/tgs-09-keiji-inafune-dumps-on-tokyo-game-show-2009-149909.phtml http://www.nytimes.com/2010/09/20/technology/20game.html?r=2 http://www.gamasutra.com/view/feature/6521/we_need_heroes_inafune_speaks.php http://www.gamasutra.com/view/news/164913/gdc_2012_japanese_industry_has.php
Ways out of the dilemma
Publishers
Give new companies a chance. It might pay off. The games industry is small, even more so in Japan. So chances are that new companies are created by former employees of another studio, hence veterans who have an idea about what to do. So even if such a company hasn’t released any game yet, it’s worth the risk to investigate in them.
Studio bosses
Create acceptable working conditions. Crunching or doing long hours of overwork, bascially having the employees stay in the company for a fortnight is not acceptable nor is it legal. Even more, it is hurting your own company. Relaxed developpers produce better work, higher quality and less errors, which results in fewer bugs to fix, hence more time to actually focus on the core game. The 40h week is a fair concept for more than a century (mostly outsude of Japan though).
Really, create working conditions at least at par with international standards. This might include free gym membership (fit and healthy employees have less sickness times and are overall more motivated).
Hire smart(er) people. If you think your developpers can’t keep up with the West, just hire smarter people. Or train your employees. Seriously, what I have seen on code, I’m not sure when people were programming like that, but it might just go back to the early stone age. (I’d like to give an example, but NDA oblige…)
Hire international developpers. A lot of westernes would love to work in Japan for a while. They might join and bring in their knowledge, if the owrking conditions and pay are “motivating”.
Developpers
Focus on what you prooved to do right. I mean, mounting a Jetpack on an opossum was genius (the opossum might disagree). You created great gameplay in the past and grerat visuals too. There’s no reason you can’t do that nowadays. Journey, Flower, fl0w etc just proved that you don’t need high-end graphics for a game.
Focus on new ideas. Remember how to create gameplay? Take the canon of a genre, remove it’s main feature, replace it with main feature of another genre.
Try out new ideas. Prototyping a new idea can be hard. But there are ways to get immediate feedback through crowdsourcing. Just your prototype played as an indie title by millions of gamers by publishing it on Steam. Plus you generate product buzz around your company.
Don’t depend on publishers. There are other channels to raise funds (Kickstarter just showed how to do it) or to publish your game, with all the AppStores and SteamStores around.
Create a visual identity. A consistent visual identity might make your game stick out of the mass of other games around. Ookami might have failed, but everyone is remembering its awesome style.
Don’t fall in the reinvention of the wheel trap. Developping your own engine might be fun for programmers (it is!) but it’s not making you any money. Plus you’re never gonna catch up with researcher teams. Instead use engines. With CryEngine3, UE3, Unity, Vision and even more engines around, you have a broad choice.

Test-driven development
Get expert council. If your game is rich in cinematics, you might as well want ot get expert knowledge on putting the cut scenes on shape from people in the movie industry.
Stop focussing on niche groups. The Otaku who prefers his virtual girlfriend to fleshy girls is mostly limited to Japan. So why care about him if you could have millions more gamers play your game in the rest of the world.
Know your target audience.
Don’t play catch up with the west. Especially, don’t micic western games (that much).

ようこそ
Welcome to my blog.
My name is 紅栗鼠 (read Kurisu) and I’m a graphics programmer working and living in Tokyo, Japan. I’ll be blogging here on how to cope with work, life and the daily craziness in Japan.
I hope you’ll enjoy reading my rants.
よろしくお願いします。


Death Star
Price: 20 bln
Class: Space Battle Station
Width: 160 km
Maximum speed: Faster than light
Propulsion: Imperial Hyperdrive
Energy of Devastation in J: 2.2E32
Infinity Gauntlet
Price: 230 bln
Designed to hold six of the 'soul gems', better known as the Infinity Gems.
Limited design edition. Specifications are available upon request.
Tyrant Virus
Price: 5 bln
Manufacturing: Umbrella Corporation
Group: Group VI (ssRNA-RT)
Family: Retroviridae
Genus: Unknown
Wholesale is possible.
Doomsday Device
Price: 100 bln
A giant robot ship, a planet-eating machine made by a long-dead alien race. Uses beams of antiprotons to tear planets apart.
About availability check with distributors.
Reality Bomb
Price: 400 bln
Type: Multi-universal matter destroyer
Creator: Davros
Annihilates all matter in the multiverse.
Energy of Devastation in J: 4E84
Halo
Price: 13 bln
Currently out of stock. Expected supply.
Energy of Devastation in J: 1.3E20
Little Doctor
Price: 90 bln
Designed and built: International Fleet
The Molecular Disruption Device utilizes two beams, which when fired would meet together to create a field in which electrons could not be shared.
Energy of Devastation in J: 9.8E58
Crowbar
Price: 500 bln
The most fabulous weapon all over the galaxy. Limited edition.


--- title: Geranium city: Copenhagen, Denmark date: 2018-11-22 mapleft: -503 maptop: -147 listdata: Geranium is the 6th restaurant on my quest to go to the World’s 50 Best Restaurants. It’s 19th place for both 2017 and 2018 and is a Michelin 3-starred restaurant in Copenhagen. idx: 6 ogimage: https://res.cloudinary.com/snookca/image/upload/v1544557615/geranium/c5majvt8f8wwaap3s1mn.jpg tags: - post layout: layouts/post.njk ---
Kitt and I ended up travelling to Copenhagen with her parents to celebrate Thanksgiving and I set up reservations at Geranium. The restaurant is situated on the 8th floor of the building where the Danish national football club plays—an interesting location to be sure.
From the moment we walked in the restaurant, the service was fantastic and friendly. The kitchen prep area sits at one end of the venue and was neat to take a peek every now and then into what might be coming up next. (It’s a bit difficult to see from halfway across the restaurant. There is a table right next to the prep area that you can book.)
Over the course of the meal, the servers really made us feel special.
As an aside, I find wine pairings to be confusing. Some places will do a glass with each course. I like to enjoy the particular wine before, during, and after the particular dish it’s paired with. Some places, however, will pair a wine with two to three courses. As such, I’ll finish the wine after a dish, only to have another plate come out with no wine to go with it.
Having them top up my glass is nice but I also don’t want to be completely sloshed and stumbling a third of the way into the meal!
The food itself was delightfully yummy. There wasn’t a bad dish to be had. The courses were mostly pescatarian, with a single duck course at the end.
However, not a single dish made the world disappear as my entire life became about this food in my mouth at that very moment. The best way to describe it is that every dish is a 9/10. A perfectly formidable rating but nothing was a 10 out of 10. Consistent and delicious but not daring.
Verdict: I think there are other places I’d seek out before Geranium. It’s definitely on the pricey side but, at the same time, it was a wonderful experience and I don’t think you’d be disappointed.
Also, I want their wine cellar.


RONIN (director: John Frankenheimer; cast: Robert De Niro (Sam), Jean Reno (Vincent), Natascha McElphone (Dierdre), Stellan Skarsgard (Gregor), Sean Bean (Spence), Skipp Sudduth (Larry), Michael Lonsdale (Jean-Pierre), Jonathan Pryce (Seamus), Katrina Witt (Natascha Kirilova), 1998)
Ronins are the samurais of old Japan who are dishonored because they failed to protect their master.They roamed the country as bandits and soldiers of fortune, but still remained loyal to their masters.This action film takes place in modern France, as a group of secretive older military types (CIA and Kgb'ers and soldiers of fortune) are likened to the Ronins. They come together, ala DIRTY DOZEN style, and meet this taciturn Irish bartender (Natascha) in this Parisian bar (Paris has a seedy look to it throughout the film, graffiti is everywhere). She tells them the minimum details of the plans.The real leader turns out to be Seamus (Pryce), who chooses to remain in the background. They aim to use these so-called Ronins to ambush a well-protected outfit who have in their possession a steel black case they want retrieved. The filmmaker chooses to not tell the Ronins or the audience what valuables are in the case, only that both the Russians and their group (it is implied that they are IRA) are interested in getting it, and since they don't have enough money to buy it they are going to steal it.
Sam (De Niro) is ex-CIA; he is in this caper for the money. He is a cool customer who never panics, and is a natural leader.Vincent (Reno) is the Frenchman who is Sam's truest friend. Spence (Bean) is the edgy Irish weapon's man. Larry (Skipp) is the experienced driver. Gregor (Stellan) is the computer expert and ex-KGB man. This multi-national crew runs into a series of betrayals; duplicity becomes the norm. There are outlandish car chases, seemingly trying to outdo other famous film car chases. Cars go the wrong way on highways, bystanders get gunned down and cars' crash. One car chase is reminiscent of the Paris tunnel where Princess Di died, the other the sinewy road Princess Grace had her fatality on in southern France. Mindless adventure takes hold, and the story becomes implausible and unimportant. An effort was made to provide a crisp dialogue, as Mamet, was supposedly the Richard Weisz, who is mentioned in the credits as the story writer. It was wise of Mamet for not displaying his own name. Yet there is a sprinkling of good lines and humor, here and there, enough to make the film mildly diverting, if you are into watching this film for something else besides the action scenes.
But despite some attempts to make this a deeper than usual actioner, Frankenheimer's film is just your typical actioner. What gives it a lift and a sense of being something more than the thin story it really is, is the beautiful camera work and moody colors of the cinematography; and, the superb acting by a very capable cast. Without De Niro's presence this film would have been less than a run-of-the-mill action film, despite its excellent cinematography.
I also found that Pryce and Skarsgard stood out in their villain roles. And Katrina Witt was a welcome relief from all the hard action scenes. It was good to watch her perform with grace and beauty on skates. She played the Russian figure skater who gets shot while performing. It didn't make sense; but, then again, nothing really made sense in this film.
Frankenheimer has fallen off the precipice from his glory days of the '60s and '70s. I admired his MANCHURIAN CANDIDATE (62) and FRENCH CONNECTION 11 (75) for the raw power of their stories and their keen insights into his characters' behavior.Unfortunately, this film is not of the same caliber. It fails to make us think that what is taking place is anything but absurd; and, that is the shame of it.This once great filmmaker, in his prime, always seemed to provide us with both thoughtful and suspenseful films that had some depth to them; while this film, is at best, only mildly diverting.
REVIEWED ON 10/19/98 GRADE: C
Dennis Schwartz: "Ozus' World Movie Reviews"
<EMAIL_ADDRESS>http://www.sover.net/~ozus
=A9 ALL RIGHTS RESERVED DENNIS SCHWARTZ
The review above was posted to the
rec.arts.movies.reviews newsgroup (de.rec.film.kritiken for German reviews).
The Internet Movie Database accepts no responsibility for the contents of the
review and has no editorial control. Unless stated otherwise, the copyright
belongs to the author.
Please direct comments/criticisms of the review to relevant newsgroups.
Broken URLs inthe reviews are the responsibility of the author.
The formatting of the review is likely to differ from the original due
to ASCII to HTML conversion.
Related links: index of all rec.arts.movies.reviews reviews


Market On Open orders are filled at the official opening price for the security. They must be submitted two minutes before the market opens to be included in the opening auction.
The Market On Open Quantity
and Tag
properties can be updated after creation until the last two minutes before open.
Market On Close orders are filled at the official closing price for the security. They must be submitted at least two minutes before the market closes to be included in the official closing auction. The Market On Open Quantity
and Tag
properties can be updated after creation until the last two minutes before close.
For more information on updating orders, see Updating Orders.
// Create Market Open/Close Orders for 100 shares of IBM var marketOpenOrderTicket = MarketOnOpenOrder("SPY", 100); // Place Before Open var marketCloseOrderTicket = MarketOnCloseOrder("SPY", 100); // Place Before Close
# Create Market Open/Close Orders for 100 shares of IBM marketOpenOrderTicket = self.MarketOnOpenOrder("SPY", 100) # Place Before Open marketCloseOrderTicket = self.MarketOnCloseOrder("SPY", 100) # Place Before Close
When you place a market on open or close order, you do not know its fill price until after the order is completed. If your order quantity is too close to your total portfolio buying power, you have a high chance of it being rejected as there may be large changes in price overnight. We recommend you consider this when sizing your portfolio to increase your probability of successful trades.


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Philosophy¶
The Pareto Principle states that roughly 80% of the effects come from 20% of the causes. In software development terms, this could be translated into something along the lines of 80% of the results come from 20% of the complexity.
Idiorm is deliberately simple. Where other ORMs consist of dozens of classes with complex inheritance hierarchies, Idiorm has only one class, ORM, which functions as both a fluent SELECT query API and a simple CRUD model class. If my hunch is correct, this should be quite enough for many real-world applications. Let’s face it: most of us aren’t building Facebook. We’re working on small-to-medium-sized projects, where the emphasis is on simplicity and rapid development rather than infinite flexibility and features.
You might think of Idiorm as a micro-ORM. It could, perhaps, be “the tie to go along with Slim’s tux” (to borrow a turn of phrase from DocumentCloud). Or it could be an effective bit of spring cleaning for one of those horrendous SQL-littered legacy PHP apps you have to support.
Idiorm might also provide a good base upon which to build higher-level, more complex database abstractions. For example, Paris is an implementation of the Active Record pattern built on top of Idiorm.


This part of the Best Practices Guide focuses on templates.
The templates directory should be structured as follows:
.yaml
if they produce YAML output. The extension .tpl
may be used for template files that produce no formatted content.my-example-configmap.yaml
), not camelcase.foo-pod.yaml
, bar-svc.yaml
Defined templates (templates created inside a {{ define }}
directive) are globally accessible. That means that a chart and all of its subcharts will have access to all of the templates created with {{ define }}
.
For that reason, all defined template names should be namespaced.
Correct:
Incorrect:
It is highly recommended that new charts are created via helm create
command as the template names are automatically defined as per this best practice.
Templates should be indented using two spaces (never tabs).
Template directives should have whitespace after the opening braces and before the closing braces:
Correct:
{{ .foo }}
{{ print "foo" }}
{{- print "bar" -}}
Incorrect:
{{.foo}}
{{print "foo"}}
{{-print "bar"-}}
Templates should chomp whitespace where possible:
foo:
{{- range .Values.items }}
{{ . }}
{{ end -}}
Blocks (such as control structures) may be indented to indicate flow of the template code.
{{ if $foo -}}
{{- with .Bar }}Hello{{ end -}}
{{- end -}}
However, since YAML is a whitespace-oriented language, it is often not possible for code indentation to follow that convention.
It is preferable to keep the amount of whitespace in generated templates to a minimum. In particular, numerous blank lines should not appear adjacent to each other. But occasional empty lines (particularly between logical sections) is fine.
This is best:
This is okay:
But this should be avoided:
Both YAML and Helm Templates have comment markers.
YAML comments:
Template Comments:
Template comments should be used when documenting features of a template, such as explaining a defined template:
{{- /*
mychart.shortname provides a 6 char truncated version of the release name.
*/ -}}
{{ define "mychart.shortname" -}}
{{ .Release.Name | trunc 6 }}
{{- end -}}
Inside of templates, YAML comments may be used when it is useful for Helm users to (possibly) see the comments during debugging.
# This may cause problems if the value is more than 100Gi
memory: {{ .Values.maxMem | quote }}
The comment above is visible when the user runs helm install --debug
, while comments specified in {{- /* */ -}}
sections are not.
YAML is a superset of JSON. In some cases, using a JSON syntax can be more readable than other YAML representations.
For example, this YAML is closer to the normal YAML method of expressing lists:
But it is easier to read when collapsed into a JSON list style:
Using JSON for increased legibility is good. However, JSON syntax should not be used for representing more complex constructs.
When dealing with pure JSON embedded inside of YAML (such as init container configuration), it is of course appropriate to use the JSON format.


This website will go over the key overviews listed below
| Topic | Description |
|---|---|
| Societies and Cultures | The impacts (+ and -) of the emerging technology on societies and cultures around the world |
| Local and World Economy | The impacts (+ and -) of the emerging technology on the local and world economy |
| Environment | The impacts (+ and -) of the emerging technology on the environment, and how you would suggest lowering the negative impacts |
| Human Health | The impacts (+ and -) of the emerging technology on human health, and how you would suggest lowering the negative impacts |
| Ethics | Any ethical issues that could propagate from the development or implementation of this technology. Propose strategies to encourage ethical practices related to the emerging technology based on the ethical issues you discussed above. |
| Career Pathways | New career opportunities that will exist when this emerging technology is integrated into society. Post-secondary education requirements for these careers. |
| Other Fields of Study | What other fields of study are incorporated into the emerging technology? How is this vital to how the technology works? |
Paper: A Style-Aware Content Loss for Real-time HD Style TransferIn every work of art, the artist himself is present
| Method | Deception Rate | Expert Score |
|---|---|---|
| Content Images | 0.002 | - |
| AdaIn | 0.074 | 0.132 |
| PatchBased | 0.040 | 0.048 |
| Johnson et al. | 0.051 | 0.044 |
| WCT | 0.035 | 0.044 |
| CycleGan | 0.139 | 0.044 |
| Gatys et al. | 0.147 | 0.178 |
| This Paper | 0.393 | 0.495 |
Mobile use is growing faster than all of Google's internal predictions
Paper: Learning to See in the DarkDarkness cannot drive out darkness; Only light can do that.
The way the world is going, it's technology driven. And it isn't just driven by the old super powers, it's driven by the far east and new emerging economies.
Paper: Let there be Color! Joint End-to-end Learning of Global and Local Image Priors for Automatic Image Colorization with Simultaneous ClassificationPhotography to me is catching a moment which is passing and which is true


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@(params: Map[String, Any]) @maskedAccountNumber = @{ "****" + params("ACCOUNTNUMBER").toString.drop(4) } @formatDate(yyyymmdd: String) = @{ val year = yyyymmdd.slice(2,4) val month = yyyymmdd.slice(4,6) val day = yyyymmdd.slice(6,8) s"$day/$month/$year" } @uk.gov.hmrc.hmrcemailrenderer.templates.helpers.html.template_main(params, "Confirmation of your direct debit instruction to pay VAT") {
Dear @params("NAME")
Reference @params("DDIREFERENCE")
Your direct debit instruction has been set up. Make sure the following details are correct:
| Account name | @params("ACCOUNTNAME") |
|---|---|
| Account number | @maskedAccountNumber |
| Sort code | @params("SORTCODE") |
If any of these details are wrong, call us on @params("PHONENUMBER") and quote your reference.
You have the right to cancel your direct debit at any time.
We will send you a notification of the amount to be collected 2 working days before we apply to your bank or building society for payment.
Payments will be collected under @params("NEWSUNNAME").
From HMRC direct debit team


Efc is a website made for kids who need experience in ceratin areas or Adults who need help with housework. Simply go to the chat and ask someone if they need help with Housework.If you help them you get either experience from them or money.You also learn life skills by doing chores for them. It's a WIN-WIN situation.
Find Out More


@Retention(value=RUNTIME) @Target(value=FIELD) public @interface EdmNavigationProperty
Annotation for definition of an EdmNavigationProperty for an EdmEntityType which contains the navigation property as a field.
The EdmNavigationProperty annotation has to be used on a field within a EdmEntityType annotated class.| Modifier and Type | Optional Element and Description |
|---|---|
String |
association
Define the name for the related Edm Association Set (of the Navigation Property).
|
String |
name
Define the name for the Navigation Property.
|
EdmNavigationProperty.Multiplicity |
toMultiplicity
Define the multiplicity to the target EdmEntity of the Navigation Property.
|
String |
toRole
Define the name for the related Edm Role (of the Navigation Property).
|
Class<?> |
toType
Define the target entity in form of a java class for the Navigation Property.
|
public abstract String name
public abstract Class<?> toType
EdmEntityType
.
If not set a EDM provider should be able to determine the corresponding type or
to handle the default setting.EdmEntityType
.public abstract String association
public abstract String toRole
public abstract EdmNavigationProperty.Multiplicity toMultiplicity
ONE
is assumed.
This could be overwritten by the EDM provider if the correct multiplicity can be determined.
As example: The default multiplicity of ONE
on a field (EdmProperty) with
a java type Collection
can be overwritten by a multiplicity of MANY
.Copyright © 2013-2017 The Apache Software Foundation. All Rights Reserved.


JinWang's HTML5 Quiz
www.jinwang.us
1. Which tag should be used to represent the "header" of a document?

<heading>

Submit
2.Which of the following is NOT a new feature of HTML5?
New Media Elements
Form Types
Local Storage
Cookies
Submit
3. Which element is the most appropriate to wrap around each blog post on a page?

<post>

Submit
4. Which HTML5 tag is used for sidebar content?

<sidebar>

<side>
Submit
5. Using canvas, which is used to color in a rectangle?
strokeStyle
fillRect
strokeFill
rectFill
Submit


Part B: To push, you have to do two things, depending on the current size of the queue. If it is zero, then simply create a one-element queue whose first and last pointers point to the only node. Otherwise, you allocate a new node, and have the last element point to it. In either case, you update the size:
void Queue::Push(string s) { Qnode *n; n = new Qnode; n->s = s; n->ptr = NULL; if (size == 0) { first = n; } else { last->ptr = n; } last = n; size++; } |
Part C: The easy way is to do a simple loop using Empty() and Pop:
Queue::~Queue() { while (!Empty()) Pop(); } |
That only gets you half credit, though, because it is inefficient performance-wise. Instead, start at the first node and traverse to the back, calling delete:
Queue::~Queue() { Qnode *tmp; while (first != NULL) { tmp = first; first = first->ptr; delete tmp; } } |
Part B: With quadratic probing, we add i2 to the index for i equals 0, 1, 2 and 3. Therefore, the indices are 44, 45, 48 and 3 (since you have to take the result mod 50).
Part C: With double hashing, we add i*h to the index for i equals 0, 1, 2 and 3, and h equal to the other hash. The other hash in this case is 230264537, which equls 37 mod 50. Therefore, the indices are 44, 81%50 = 31, 118%50 = 18 and 155%50 = 5.
Part D: We perform the same mechanics as in Part C, only now the initial index is 2 and h is 32. Therefore, the indices are 2, 34, 66%50 = 16 and 98%50 = 48.
#include <set> #include <iostream> using namespace std; main() { multiset <string> l; multiset <string>::iterator lit; string s; while (getline(cin, s)) l.insert(s); for (lit = l.begin(); lit != l.end(); lit++) cout << *lit << endl; } |
0: 3 -> 1 1: 1 -> 1 2: 1 -> 3 |
Command B: This sets mod equal to 7. We then have 6%7=6, 5%7=5, 13%7=6, 20%7=6 and 27%7=6. Thus, the map holds the following [key,value] pairs: [5,1], [6,6]. The program prints:
5: 1 -> 4 6: 4 -> 0 |
Command C: This sets mod equal to 5. We then have 100%5=0, 54%5=4, and 15%5=0. Thus, the map holds the following [key,value] pairs: [0,2], [4,1]. However, when i equals zero in the loop, looking up m[1] to print it out actually inserts it into the map with a value of zero. Therefore, all values of i are printed, between 0 and 4:
0: 2 -> 0 1: 0 -> 0 2: 0 -> 0 3: 0 -> 1 4: 1 -> 2 |
Second, if they just had Users in their second field, then the users in Names would have to be duplicates of those in Phones. Were you to perform an action such as Add_Phone() or Remove_Phone(), it would have to act on both the copy in Names and the copy in Phones (and any other copy that you would have. By storing a pointer, Add_Phone() and Remove_Phone() add or remove a phone from one User, which is pointed to by Names and Phones.
The program works as follows -- keep a vector count for the digits, where count[i] is the number of times digit i appears in the number. If i is nine, you add it to count[6].
When you're done, set count[6] to (count[6]+1)/2. Then find the maximum value in count -- that is the number of sets.
Here's the code. I've bundled it up into a program that takes the number on the command line in q7.cpp:
int RoomNumber::numberOfSets(int n) { vector <int> count; int i; int digit; int max; count.resize(9, 0); while (n > 0) { digit = n % 10; n /= 10; if (digit == 9) digit = 6; count[digit]++; } count[6] = (count[6]+1)/2; max = 0; for (i = 0; i < 9; i++) if (count[i] > max) max = count[i]; return max; } |


2020 BMW 4 Series spied inside and out
BMW's two-door take on the 3 Series sedan has been snapped out in the open once again, and this time we can see the car's cabin.
by Scott Collie- shares
The 2020 BMW 4 Series has been caught in the open once again, this time wearing less camouflage at the front end.
Our latest spy photos also reveal the 4 Series will share its interior design with the current 3 Series. That means the dashboard is home to a 12.3-inch infotainment display with BMW OS7.0, and the driver is faced with a 10.25-inch digital instrument binnacle.
There's nothing separating the 4er's interior from that of the 3er based on what we can see here, although BMW Australia may offer some unique trim options locally.
Externally, we're expecting to see more substantial differences between the 3 Series and 4 Series. Previous leaked images have revealed the car will get a huge grille inspired by the Concept 4, and our latest images back that up.
It's covered by camouflage here, but we can make out the top of two separate grille sections instead of the wider, slimmer linked unit used on the 3 Series.
The car's headlamps are more rounded than those of the 3 Series, too, in keeping with the design of BMW's flagship 8 Series coupe.
Down back, the 4 Series has taillights similar to those of the recently-revealed 2 Series Gran Coupe and X6 SUV. They're significantly slimmer and wider than those of the 3 Series, and have a more interesting light signature.
There's a subtle lip spoiler atop the bootlid, and the car's hips appear slightly rounder and more pronounced than those of the current car.
The rear bumper is home to two chunky exhaust outlets, and what looks like a diffuser-style insert.
Under the skin, the new 4 Series will share its CLAR underpinnings and interior with the latest 3 Series. This should make it lighter than the current model, which tends to do good things for handling.
A plug-in hybrid model is also likely. Rear- and all-wheel drive will be offered, along with a choice of coupe, convertible, and five-door Gran Coupe bodies.
Expect a range of four-cylinder and six-cylinder turbocharged petrol and diesel engines to underpin the core range, while the M4 will be powered by the same 'S58' 3.0-litre inline-six used in the X3 M Competition.
1
20
nextprevious
2020 BMW 4 Series spied inside and out


“Atthāya vata me buddho,
nadiṁ nerañjaraṁ agā;
Yassāhaṁ dhammaṁ sutvāna,
micchādiṭṭhiṁ vivajjayiṁ.
It was truly for my benefit
that the Buddha went to the river Nerañjara.
When I heard his teaching,
I shunned wrong view.
Yajiṁ uccāvace yaññe,
aggihuttaṁ juhiṁ ahaṁ;
‘Esā suddhī’ti maññanto,
andhabhūto puthujjano.
I used to perform a diverse spectrum of sacrifices;
I served the sacred flame,
imagining, “This is purity.”
I was a blind, ordinary person.
Diṭṭhigahanapakkhando,
parāmāsena mohito;
Asuddhiṁ maññisaṁ suddhiṁ,
andhabhūto aviddasu.
Caught in the thicket of wrong view,
deluded by misapprehension.
Thinking impurity was purity,
I was blind and ignorant.
Micchādiṭṭhi pahīnā me,
bhavā sabbe padālitā;
Juhāmi dakkhiṇeyyaggiṁ,
namassāmi tathāgataṁ.
I’ve abandoned wrong view;
all rebirths are shattered.
I serve the truly worthy flame:
I bow to the Realized One.
Mohā sabbe pahīnā me,
bhavataṇhā padālitā;
Vikkhīṇo jātisaṁsāro,
natthi dāni punabbhavo”ti.
… Nadīkassapo thero ….
I’ve given up all delusion;
craving for continued existence is shattered;
transmigration through births is finished;
now there are no more future lives.


?6
7
8
9
10
.
The
New
York
Copyright
reserved
Botanical
Garden
BOTANICAL
QARDe^
NEW
YORK
BOTANICAL
GARDEN
01334608
JARDIN
BOTANICO
NACIONAL
"DR.
RAFAEL
M.
MOSCOSO"
SANTO
DOMINGO.
REPUBLICA
DOMINICANA
Kir.
10708
FAMILIA.
Mecardonia
procurobens
(Mill.)
Small
Det.
G.
R.
Proctor
Herbs
with
stems
square;
3
spals,
corolla
deep
yellowj
Repiblica
Dominicana:
Prov.
La
Altagracia:
"El
Caracol"
where
old
road
parallel
to
Rio
Duey
(R.
Yuma)
crossed
river,
N
of
town
of
3oca
de
Yuma,
old
bridge
without
road
bed;
humid
forest
on
limestone.
18024'N,
68Ç37'W,
alt
about
10
m.
February
5,
1981.
T.
Zanoni,
M.
Mejia,
C,
Ramirez.
01334608
Legend -
Level of confidence that token is an accurately-transcribed word
extremely low
very low
low
undetermined
medium
high
very high


EZID is an interface that provides an easy way for digital object producers and others to obtain, register, and describe long-term identifiers for their objects. It comes with a web user interface (UI) and a web Application Programming Interface (API). This document describes Version 1 of the EZID API.
Please use the following address to report any problems:
<EMAIL_ADDRESS>Failures outside of normal working hours (08:00 to 17:00 Pacific, Monday - Friday) will be addressed the next work day.
The EZID API (and UI) is available from the base URL,
http://n2t.net/ezid
Interaction is done via RESTful HTTP. Message bodies of both requests and responses are of content type "text/plain", with all text in Unicode and encoded in UTF-8.
A message body is a set of newline-terminated (LF) text lines. Each line represents an element consisting of an element name, a colon, and the element value (this is a subset of the ANVL format).
Author: Proust, Marcel Title: Remembrance of Things Past _target: http://...
Some characters must be percent-encoded with three characters "%XY", where XY is the character's hex code. These include ':' and '.' in element names, and ';' and '|' in element values.
Element names beginning with an underscore ('_') are reserved for internal use by EZID. There is one reserved element name, _target, to hold the reidirection target URL. In returned metadata, additional elements with leading underscores may be returned; this is metadata maintained by EZID.
All requests require HTTP basic authentication except GETs on identifiers.
Responses consist of a status line possibly followed by metadata, depending on the operation. A status line may be "success:" followed by the normalized form of the identifier in question, e.g.,
success: doi:10.1234/FOO
or a status line may contain some kind of error:
error: bad request - <reason...> error: unauthorized error: internal server error error: method not allowed
The HTTP status code matches the status line.
A DOI is registered with a request of the form
PUT http://n2t.net/ezid/id/{identifier}
This will create the supplied {identifier} in the sense that it will bind (record) assertions about the identifier string in a place where others can see them. Until such assertions are shared, an identifier is not much harder to manage than a private thought, as the identifier string is unencumbered by others' expectations.
The body, which may be empty, should contain metadata to associate (bind) with the identifier. For example,
C: PUT http://n2t.net/ezid/id/doi%3A10.1234/foo C: C: _target: http://... S: HTTP/1.1 200 OK S: Content-Type: text/plain S: S: success: doi:10.1234/FOO
where lines marked with a C are issued by a web client and lines marked S are issued by the server. The response is successful if and only if the HTTP response returns code 200 and the response body begins with "success:".
import urllib2 baseurl = "http://n2t.net/ezid" h = urllib.request.HTTPBasicAuthHandler() h.add_password("EZID", baseurl, "username", "password") opener = urllib.request.build_opener(h) # Create a DOI with an initial target and other metadata. r = urllib.request.Request(baseurl + "/id/doi%3A10.9999/test") r.get_method = lambda: "PUT" r.add_header("Content-Type", "text/plain") r.add_data("_target: http://www.cnn.com/\nCreator: Francis Bacon") try: c = opener.open(r) print c.read() c.close() except urllib2.HTTPError, e: print e.code, e.msg print e.fp.read() # Add/update some metadata to a DOI. r = urllib.request.Request(baseurl + "/id/doi%3A10.9999/test") r.add_header("Content-Type", "text/plain") r.add_data("Creator: J.K. Frimple") try: c = opener.open(r) print c.read() c.close() except urllib2.HTTPError, e: print e.code, e.msg print e.fp.read() # Retrieve a DOI's metadata. try: c = urllib.request.urlopen(baseurl + "/id/doi%3A10.9999/test") print c.read() c.close() except urllib2.HTTPError, e: print e.code, e.msg print e.fp.read()


In my experience, there are three simple ways to think about using ReactiveCocoa:
As a lovely, simple replacement API for Key-Value Observation;
As a way to introduce Functional Reactive Programming (FRP) into Cocoa apps;
A hybrid of the two.
Key-Value Observation Done Right
Here’s the current state of using Key-Value Observation to observe and respond to changes to a string property on my fictional class:
Here’s the same thing using ReactiveCocoa:
There’s no need to tear down the observer when you’re done, and if you’re only interested in using ReactiveCocoa as a simple replacement for KVO, there you go! “Bam” said the lady.
‘Bringing It’ Functional Reactive Style
The real drive behind the GitHub team building ReactiveCocoa is something called “Functional Reactive Programming” (or FRP). I’m the first to admit that I don’t always understand the most elegant way to approach problems in Cocoa apps using FRP, but the basic gist is that you’re removing unnecessary state from your code.
In the KVO example above, we’re dealing with a string property on a fictional class instance, the actual real-world use of this would not be so abstract. It’s likely that we’re taking a string value from some data source and displaying it in a text field. So here’s that:
Still with me? Every time the self.someManagedObject.name attribute changes, that change will automatically propagate to the text field. Conceptually, it’s quite a lot like Cocoa Bindings, but unlike bindings it’s available for use on iOS.
But that’s still not the real advantage of ReactiveCocoa. Consider this, you have an NSDate property on one of your objects that you’d like to display in a text field. ReactiveCocoa can help you do that, while providing the same binding-style advantages as above:
Now any time the date changes on the managed object, the text field will automatically update as well, converting from NSDate to NSString as it goes. Nifty, hey?
Danger! High Voltage Reactions
So ReactiveCocoa, yay! More succinct code, yay! “Should I be using this right now?” I hear you ask?
In the course of adopting ReactiveCocoa for use in my own projects, I’ve discovered some not awesome things:
Thinking about things in an FRP way currently takes longer for complex situations. At least for now, I’m finding I spend a lot less time on the simple interactions between my data and the UI, but a lot longer on complex problems. There’s a lot of abstract thinking and explanations in FRP;
It’s really easy to end up with hundreds of lines of subscriptions and maps for more complex UIs — I call this “ReactiveSpaghetti”. I don’t think this problem is unique to ReactiveCocoa, but it’s easier to see it in action when your - (void)viewDidLoad method turns into a RACParty;
A lot of Xcode and LLDB’s nice debug handling doesn’t work well with ReactiveCocoa. You will be dumped into an untraceable stream of RACSignals and blocks at some point. Don’t even get me started on crash reports that originate from within ReactiveCocoa! There are logging methods built into ReactiveCocoa, but they’re not going to do you any good with a user-uploaded crash log;
So ReactiveCocoa is not all peaches and cream, but to date I’ve also noticed no performance issues and I feel like I’m expressing myself more clearly through RAC-enabled code than I was beforehand.
After my experiences, I could happily just stick to using the -subscribeNext: and -map: methods in a very simple, KVO-esque manner.


RapiDoc - OAuth Example
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Examples
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How OAuth works in RapiDoc
To understand better pick an Open API spec that contains oAuth security scheme. For


About the Cabbage Looper Database
This database provides access to the cabbage looper (Trichoplusia ni) genome assembly and annotation.
Genome assemblies
The latest cabbage looper genome assembly (tn1) contains 1,031 scaffolds spanning 368.2 Mb. The scaffold N50 is 14.2 Mb, with >90% of the bases in 28 chromosome-length scaffolds. Contig N50 is 621.9 kb.
Annotation resource
The latest official gene set (OGS v1.0) is based on the tn1 genome assemnbly and contains 14,034 protein-coding genes.
piRNA clusters
Visualization
If you prefer loading the track hub yourself, it is available here
BLAST
Under construction
Related databases
Raw data
This Whole Genome Shotgun project has been deposited at DDBJ/ENA/GenBank under the accession NKQN00000000. Sequencing data are available through the NCBI Sequence Read Archive under the accession number PRJNA336361.
Contact us
Under construction


Controlling this Graphics Canvas:
- Animation is paused when this program starts, so first you should press ALT+a to play or pause animation.
-
Fly around the scene to adjust your vantage point using the keys w a s d to move in the plane that's along the ground,
and the keys space and z to float up and down. At any time press r to reset the camera and vantage point back to the origin.
-
The f key unfreezes the camera's rotation setting so you can aim it around while flying or sitting still. Move the mouse around away from the
center of the window to steer, and press f again to stop this and to freeze the steering again. Any roll rotation is controlled
separately with the comma and period keys.
- The keys ALT+n, ALT+g, and ALT+s switch shading behaviors. ALT+n directly shows you normal vectors on shapes
by interpreting X,Y,Z vectors as R,G,B colors. ALT+g toggles Gouraud shading vs Smooth Phong shading with textures, and ALT+s colors everything a random solid color.
-
Press 1 and 2 to cycle through a live feed of important strings and values of the program -- each Displayable object has a function where it can provide these.
-
The keys p and m cycle through a list of the coordinate axes (bases) you have listed down as worth drawing (at various points within your drawing routine).
-
Have fun.


Do you like dogs? (PROTIP: Check this to continue)
What's your favorite animal?
What's your favorite kind of dog?
Husky
German Shepherd
Black Lab
Golden Retreiver
Which do you prefer?
Cat
Dog
PROTIP: This button will reveal the correct answer
Press me
Yes
Change yes to no
DOM Manipulation


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Our
Transition to React Native (2020): An overview of Khan Academy's mobile
apps moving from React Native from 2017 to 2020. Some of it's
technical, but much of it is about the higher-level things you might
expect if you're considering this change!
Custom
Navigation Transitions (2019): A thorough walkthrough of setting up
custom screen-to-screen animated transitions in iOS. This is one of
the trickier bits in working with UIKit - I've long-wanted a thorough
walkthrough like this, so when I was building this up for Locket, I
made this tutorial to help others learn it too.
Grading
Your App with a Weighted GPA (2016): Individual bug reports are
super-handy for precisely tracking the fix of an issue - but
too-often, piles of UI nits get ignored, even when they add up to a
poor overall experience! Give this approach a shot, it's worked well
in a few projects over the years!
Rdio,
You'll Be Missed (2015): Undoubtably the best music service of all
time, Rdio is now long gone. But back when was winding down, I grabbed
screenshots and tried to write up what made it such a comfy place to
discover and cherish your music.


Data object to store measurement for a performance counter. This object is used by CachedCounters to store counters.
More...
Data object to store measurement for a performance counter. This object is used by CachedCounters to store counters.
◆ Counter() [1/2]
| PipServices3.Components.Count.Counter.Counter |
( |
| ) |
|
Creates a instance of the data obejct
◆ Counter() [2/2]
| PipServices3.Components.Count.Counter.Counter |
( |
string |
name, |
|
|
CounterType |
type |
|
) |
| |
Creates a instance of the data obejct
- Parameters
-
| name | a counter name. |
| type | a counter type. |
◆ Average
| double PipServices3.Components.Count.Counter.Average |
|
getset |
◆ Count
| int PipServices3.Components.Count.Counter.Count |
|
getset |
◆ Last
| double PipServices3.Components.Count.Counter.Last |
|
getset |
◆ Max
| double PipServices3.Components.Count.Counter.Max |
|
getset |
◆ Min
| double PipServices3.Components.Count.Counter.Min |
|
getset |
◆ Name
| string PipServices3.Components.Count.Counter.Name |
|
getset |
◆ Time
| DateTime PipServices3.Components.Count.Counter.Time |
|
getset |
◆ Type
The counter type that defines measurement algorithm
The documentation for this class was generated from the following file:


| # | Products | Total | Mpesa Code | Served By | View |
| 1 | 10 |
ksh.5000 | MXJKMUYRYH | Kiprono | View |
| 2 | 5 |
ksh.15000 | MXPFMUYRYH | Me..name | View |
| 3 | 3 |
ksh.15000 | MXPFMUYRYH | Me..name | View |
| 4 | 2 |
ksh.15000 | MXPFMUYRYH | Me..name | View |
| 5 | 4 |
ksh.15000 | MXPFMUYRYH | Me..name | View |


Crystal is a data science student at Lambda School. She also went to school for linguistics and thinks text processing is neat.
Robin is a Data Scientist with Marketing and Project Management Experience.
Sean is a passionate data scientist from LA, and loves puppies and boba.
Caleb is currently a full time Data Science student at Lambda School.
Troy is studying Full Stack Web Development at Lambda School.
Alex is currently a full-stack web development student at Lambda School. Previously, he led sales & partnerships at Guideline 401(k)
Sami is studying Full Stack Web Development at Lambda School.
Trevor is currently studying Full Stack Web Development at Lambda School.
Matt is studying at Lambda School to be a Software Engineer.