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• generate sha256 with openssl and C++

  - by Stanislav Palatnik

  Hello, I'm looking to create a hash with sha256 using openssl and C++. I know there's a similar post about this here: http://stackoverflow.com/questions/918676/generate-sha-hash-in-openssl, but I'm looking to specifically create sha256. UPDATE: Seems to be a problem witht he include paths. It can't find any openssl functions even though I included #include "openssl/sha.h" and I included the paths in my build -I/opt/ssl/include/ -L/opt/ssl/lib/ -lcrypto

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• WSASend() with more than one buffer - could complete incomplete?

  - by Poni

  Say I post the following WSASend call (Windows I/O completion ports without callback functions): void send_data() { WSABUF wsaBuff[2]; wsaBuff[0].len = 20; wsaBuff[1].len = 25; WSASend(sock, &wsaBuff[0], 2, ......); } When I get the "write_done" notification from the completion port, is it possible that wsaBuff[1] will be sent completely (25 bytes) yet wsaBuff[0] will be only partially sent (say 7 bytes)?

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• Low level Android Debugging

  - by L4N0

  Is there a way to trace through function calls at the lowest levels of the Android system? Right now when I debug in Eclipse, it goes through the source files that are located inside the frameworks folder, but is it possible to go even lower? For example show what functions are being called from the libcore folder. I am also interested to find how it communicates with the linux kernel at the bottom of the layers. Is there a way to do this? Thanks

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• What C headers for directory traversal are process safe in Linux ?

  - by bobby

  I'm currently using dirent.h and ftw.h for directory traversal at my CGI website 100% programmed in C. I am not sure if they are process safe; would various users interfere with each other while on my site ? Which functions would you recommend for this purpose ?

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• SQL hidden techniques?

  - by AlexRednic

  What are those pro/subtle techniques that SQL provides and not many know about which also cut code and improve performance? eg: I have just learned how to use CASE statements inside aggregate functions and it totally changed my approach on things. Are there others?

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• Tools for creating UI prototype.

  - by Golovko

  Hello. I need to create a prototype of ui. I'm googling, and find "Axure RP", but it very expensive for us company. Other way for creating UI prototype is tools like Qt Designer, but it doesn't provide some cool functions and sometimes demand bit programming skills. Do you know freeware tool for my task for man without any programming skills? Thanks. Ps. excuse my english ;)

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• How to prompt a streamed file for downloading in Java / Tomcat

  - by Clem

  Hello, I'm creating a java web application runing on a Tomcat server. One of the functions fill in a StringBuffer variable with data. At the end, I would like to propose the user to download the generated content packaged in a text file. This without having to store the file on the server. I've been searching for a code snippet but couldn't find anything corresponding ... I hope I've been clear enough on my problem. Thanks in advance,

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• Windows Process : Tool to see Function and change arguments

  - by Jayan

  Sometime back I used a windows tool to see what a process is doing. This tool allowed me to inspect functions exported from DLL. It also allowed me to change the values passed to a function on the fly. I cannot recollect the name(not sure if that was free or commercial one). Could any one point to me solution that can do this? (Tools like ProcessExplorer, ProcessMonitor helps a bit.. this was better) Cheers, Jayan

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• Dynamic Comparison Operators in PHP

  - by BenTheDesigner

  Hi All Is it possible, in any way, to pass comparison operators as variables to a function? I am looking at producing some convenience functions, for example (and I know this won't work): function isAnd($var, $value, $operator = '==') { if(isset($var) && $var $operator $value) return true; } if(isAnd(1, 1, '===')) echo 'worked'; Thanks in advance.

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• Removing a line from the buffer in a vim script

  - by ahe

  According to http://vimdoc.sourceforge.net/htmldoc/usr_41.html#function-list vim script has functions setline() and append() to modify the current buffer but how do i delete a line from within a script? With setline(1, "") the line is only emptied but I want to get rid of it.

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• Calculating the maximum distance between elements of vector in Matlab

  - by lhahne

  Lets assume that we have a vector like x = -1:0.05:1; ids = randperm(length(x)); x = x(ids(1:20)); I would like to calculate the maximum distance between the elements of x in some idiomatic way. It would be easy to just iterate over all possible combinations of x's elements but I feel like there could be a way to do it with Matlab's built-in functions in some crazy but idiomatic way. Any ideas?

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• Is there any inflector like library that can return a word based on a number?

  - by stacker

  I'm using inflector Pluralize and Singularize functions. I want to know if there is a ready library that know to decide if a word needs to be Pluralize or Singularize based on a number. Like: 0 articles 1 article 2 articles

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• Image Transformation on iPhone, how to?

  - by Horace Ho

  Since I cannot pre-render all the images in PNGs and real-time image transformation functions are required, namely: skew perspective (like the transform action found in Photoshop) Which API (CoreAnimation? OpenGL ES?) should I look into? Even better, is there any sample code around? Thanks!

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• Live javascript debugging by recording function calls and parameters

  - by Jenko

  Is there a debugging system that allows me to record javascript function calls and their parameters as they occur? this would allow me to trace and debug applications in live/client situations without the performance hit due to manual logging. Edit: I'm not talking about manually calling functions using a 'console' window and viewing the results, or manually adding 'trace' or 'log' commands into my javascript. I need it to work with any running javascript.

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• On OSX, how do I gradient fill a path stroke?

  - by Emiel

  Using the plethora of drawing functions in Cocoa or Quartz it's rather easy to draw paths, and fill them using a gradient. I can't seem to find an acceptable way however, to 'stroke'-draw a path with a line width of a few pixels and fill this stroke using a gradient. How is this done?

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• Is there something like clock() that works better for parallel code?

  - by Jared P

  So I know that clock() measures clock cycles, and thus isn't very good for measuring time, and I know there are functions like omp_get_wtime() for getting the wall time, but it is frustrating for me that the wall time varies so much, and was wondering if there was some way to measure distinct clock cycles (only one cycle even if more than one thread executed in it). It has to be something relatively simple/native. Thanks

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• Preventing server-side scripting, XSS

  - by Tim

  Hey all Are there any pre-made scripts that I can use for PHP / MySQL to prevent server-side scripting and JS injections? I know about the typical functions such as htmlentities, special characters, string replace etc. but is there a simple bit of code or a function that is a failsafe for everything? Any ideas would be great. Many thanks :)

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• How to define ENUM in SQL Server 2005?

  - by KuldipMCA

  Is there any way to define ENUM in SQL Server 2005? I have fixed values which I need to use in procedures and functions.

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• JQuery Attribute Manipulation

  - by TTCG

  When I search on the Internet about JQuery and I got the jquery cheat sheet. At there, I am very confused about how to use the following under which condition. Pls help me. [attribute|=val] [attribute*=val] [attribute~=val] [attribute$=val] [attribute=val] [attribute!=val] [attribute^=val] [attribute] [attribute1=val1] [attribute2=val2] What are the functions of these special character *, ~, $, !, ^? Thanks very much.

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• Why is there no way to do introspection in Objective C with Objects?

  - by user346741

  I have seen examples (on here especially) of calling hideous C functions and getting structures back that have to be iterated, replete with reams of underbars. Why can't I do this (pseudo to follow): Money *cost = [[Money alloc] init]; for (Property *property in [[cost class] properties]){ .. } for (Method *method in [[cost class] methods]){ .. } ?

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• Is there a function in mysql to get the MBR(Minimal Bounding Rectangles) of Geometry?

  - by fallhunter

  I found that some result of MBRContains(g1,g2) and other functions seems not right to me. and I want to find out why. how to see the mbr?

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• Need to have testing server work with https: but don't have an SSL

  - by Cyrcle

  I'm working on an online store. I have it setup on my testing server. I'm having a problem where when it goes to the checkout functions it wants to start calling https pages. I don't have an SSL certificate for this server. Is there something I can do with Apache to get this to work? Mod_Rewrite perhaps? I've played a little with rewrites but haven't had any success.

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• For what else I can use MySQL?

  - by ilhan

  I know how to store data in MySQL. Shortly, I know the basics: design, storing strings, integers, date. Is there something else that could be done/achieve with MySQL? Like some kind of functions, temprory bla blas? I don't know. (I know PHP)

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• Overloading new, delete in C++

  - by user265260

  i came across this line is stroustrup An operator function must either be a member or take at least one argument of a user-defined type (functions redefining the new and delete operators need not). Dont operator new and operator delete take an user defined type as one of their arguments? what does it mean, am i missing something here

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• PHP function which does syntax color parsing for multiple languages?

  - by Edward Tanguay

  I'm doing a PHP site which displays code examples in various languages (C#, PHP, Perl, Ruby, etc.). Are there any PHP functions which add syntax coloring for these and other languages? If not, I would at least like to find that one built-in PHP function which does syntax coloring for PHP code, can't find it anymore. Thanks.

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