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  • Ideas for a C/C++ library

    - by Mohit Deshpande
    I thought one of the best ways to familiarise myself with C/C++, is to make a helpful library. I was maybe thinking like a geometry library, like to calculate areas, surface area, etc. It would be useful in game programming. Or maybe an algebra library, like for different formulas like the distance formula, quadratic formula, etc. Or maybe like a standard library for very simple functions, like calculating the number of items in an array.

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  • How can I reduce jQuery?

    - by Tommy
    I'm using just a few basic jQuery functions on my site. How can I remove unused jQuery code? Knowing only the basics, I looked at the code and was not sure where to start. If you could point me in the right direction, that would be appreciated. Thanks.

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  • An operator == whose parameters are non-const references

    - by Eduardo León
    I this post, I've seen this: class MonitorObjectString: public MonitorObject { // some other declarations friend inline bool operator==(/*const*/ MonitorObjectString& lhs, /*const*/ MonitorObjectString& rhs) { return lhs.fVal==rhs.fVal; } } Before we can continue, THIS IS VERY IMPORTANT: I am not questioning anyone's ability to code. I am just wondering why someone would need non-const references in a comparison. The poster of that question did not write that code. This was just in case. This is important too: I added both /*const*/s and reformatted the code. Now, we get back to the topic: I can't think of a sane use of the equality operator that lets you modify its by-ref arguments. Do you?

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  • Watchpoints w/xDebug in Eclipse PDT?

    - by continuum
    Has anyone gotten watchpoints to work when debugging PHP with xDebug and Eclipse? The way I understand it, I'm supposed to be able to select a watched variable in the expressions view or select a variable in the Variables view during debugging, and then select Run-Toggle Watchpoint. But Toggle Watchpoint is constantly greyed out. All my other debugging functions work fine: breakpoints, step in, out, over, etc. Just can't get a watchpoint working.

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  • C#: How to use SHOpenFolderAndSelectItems

    - by Svish
    Could someone give an example on how to use the shell function SHOpenFolderAndSelectItems from C#? I don't quite get how to use these kind of functions and couldn't find it on pinvoke.net... =/ Say I have three files called X:\Pictures\a.jpg X:\Pictures\s.jpg X:\Pictures\d.jpg I then want to open up the X:\Pictures folder with a.jpg, s.jpg and d.jpg selected.

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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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  • jQuery.keypad Performance Issues

    - by John Duff
    I am working on a Kiosk Touch Screen application and using the JQuery.keypad plugin and noticing some major performance issues. If you click a number of buttons in rapid succession the CPU gets pegged, the button clicks don't keep up with the clicking and some button presses even get lost. On my dev machine this isn't as noticeable, but on the Kiosk itself with 1 gig of ram it's painful. Trying the demo keypad at http://keith-wood.name/keypad.html#inline the one with multiple targets (which is the case with mine) has the exact same issues. Does anyone have any suggestions on how we might be able to improve this? The Kiosk runs in Firefox only so something specific to that would work. I'm using v1.2.1 of jquery.keypad and just upgraded to v1.4.2 of jquery.

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  • Delphi - Differences between CompareStr and CompareString

    - by Bourgui
    Hi all, I'm hoping someone can shed some light on this for me What are the differences, in Delphi 2009, between the CompareStr (defined in SysUtils) and CompareString (from Windows API) functions? Both let you specify the locale to be used, is the Windows one simply more "complete", due to the available comparison flags? Is one consequently faster than the other? Thanks!

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  • Android: View.getTag/setTag and IllegalArgumentException

    - by Sparafusile
    Yes, I know you need a unique resource id when calling the version of these functions that requires a key, but I cannot for the life of me figure out how to create a resource id that can be used in this way. A final variable in my class wont work and neither will a hard coded value. Both threw an IllegalArgumentException. So what gives, how do you use these methods? Spara

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  • How to ANSI-C cast from unisigned int * to char *?

    - by user314290
    I want these two print functions to do the same thing: unsigned int Arraye[] = {0xffff,0xefef,65,66,67,68,69,0}; char Arrage[] = {0xffff,0xefef,65,66,67,68,69,0}; printf("%s", (char*)(2+ Arraye)); printf("%s", (char*)(2+ Arrage)); where Array is an unsigned int. Normally, I would change the type but, the problem is that most of the array is numbers, although the particular section should be printed as ASCII.

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  • QuickTimeX in Applescript / Scripting Bridge

    - by JP
    I'd like to be able to grab the metadata of the currently playing file in Quicktime X using ScriptingBridge and Ruby, so far I have the following code require 'osx/cocoa' OSX.require_framework 'ScriptingBridge' @app = OSX::SBApplication.applicationWithBundleIdentifier("com.apple.QuickTimePlayerX") @app.documents.each do |movie| # What now?! end But I can't find any functions in QuickTime X's applescript dictionary to get the metadata from a document object (the same data you can see in QT's 'Show Movie Inspector' HUD) — does anyone have any ideas?

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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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  • JNI issue: symbol lookup error by FileHandle in C++ DLL

    - by MohamedMansour
    I made JNI functions and linked them with the c++ dynamic library successfully. I got all of them working just fine, but I had an issue for one function, I got symbol lookup error from the FileHandle class that I used in the c++ that I use to read data from file. Knowing that it's working on a normal c++ project, but not in the DLL. /usr/lib/jvm/jdk1.7.0/bin/java: symbol lookup error: /home/.../NetBeansProjects/TRIOGUI/dist/libNativeAdd.so: undefined symbol: _ZN5Gdsii9GdsParserC1EPKcN7SoftJin10FileHandle8FileTypeEN5boost8functionIFvS2_ESaIvEEE Java Result: 127 Can anybody help me please? :)

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  • Appending javascript script to end of page

    - by uzay95
    I am looking for a way to insert javascript code block to end of ASP.NET page. Page.ClientScript.RegisterClientScriptBlock(typeof(Page), "videoyuGoster", sScript, true); is appending to body but js codes are always requesting some js files didn't load or some functions are below of the script. How can i append scripts that i generated dynamically to the bottom of body? Thanks for your help.

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  • VBScript: Passing Object to Function?

    - by ioplex
    The below example generates an error: VBScript compilation error: Cannot use parentheses when calling a Sub This error does not occur if all parameters are not objects. Is there a special way to pass object parameters to VBScript functions? Option Explicit Dim obj Function TestFunc(obj) WScript.Echo "Why doesn't this work?" End Function Set obj = CreateObject("Scripting.Dictionary") obj.Add("key", "val") TestFunc(obj) ' Error here!

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  • Is there a substitute for blockproc in Matlab?

    - by SetchSen
    I've been using blockproc for processing images blockwise. Unfortunately, blockproc is part of the Image Processing Toolbox, which I don't have on my personal computer. Is there a combination of functions in base Matlab that can substitute for blockproc? My initial guess was to use im2col to transform each block into columns, and then arrayfun to process each column. Then I realized that im2col is also a part of the Image Processing Toolbox, so that doesn't solve my problem.

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  • Function Pointer

    - by Shaista Naaz
    How is that function pointer better than if-else or switch case? Is it because function pointer helps callback functions and thus promotes asynchronous implementation?

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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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