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How can I profile C++ code running on Linux?
I have a C++ application, running on Linux, which I'm in the process of optimizing. How can I pinpoint which areas of my code are running slowly?
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What are the differences between Perl, Python, AWK and sed? [closed]
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In order of appearance, the languages are sed, awk, perl, python.
The sed program is a stream editor and is designed to apply the actions from a script to each line (or, more generally, to specified ranges of lines) of the input file or...
User Authentication in ASP.NET Web API
This topic has been incredibly confusing for me. I am a rookie in HTTP apps but need to develop an iPhone client that consumes JSON data from somewhere. I chose Web API from MS because it seemed easy enough but when it comes to authenticating users, things get quite frustrating.
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What is data oriented design?
...ed very well by Andrew Keith's answer).
Say you have ball objects in your application with properties such as color, radius, bounciness, position etc.
Object Oriented Approach
In OOP you would describe balls like this:
class Ball {
Point position;
Color color;
double radius;
void dra...
How can I extract embedded fonts from a PDF as valid font files?
...ted font data as a file which is re-usable.
Using mupdf
Next, MuPDF. This application comes with a utility called pdfextract (on Windows: pdfextract.exe) which can extract fonts and images from PDFs. (In case you don't know about MuPDF, which still is relatively unknown and new: "MuPDF is a Free li...
How to build & install GLFW 3 and use it in a Linux project
...ev... There may be other libs you require such as the pthread libraries... Apparently I had them already. (See the -l options given to the g++ linker stage, below.)
Now you can type make and then make install, which will probably require you to sudo first.
Okay, you should get some verbose output on...
What is the difference between sigaction and signal?
I was about to add an extra signal handler to an app we have here and I noticed that the author had used sigaction() to set up the other signal handlers. I was going to use signal() . To follow convention I should use sigaction() but if I was writing from scratch, which should I choose?
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What are the differences between a multidimensional array and an array of arrays in C#?
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But your timings appear to be too small (a few milliseconds). At this level you'll have much interference from system services and/or drivers. Make your tests much larger, at least taking a second or two.
– Hosam Aly
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What are the use cases of Graph-based Databases (http://neo4j.org/)? [closed]
...s into the relational model, use a relational database if you can. If your application doesn't fit the relational model but it does fit the graph model, use a graph database. If it only fits something else, use that.
If your application doesn't need to fit into the current blub architecture, use a ...
Using HTML5/Canvas/JavaScript to take in-browser screenshots
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Your web app can now take a 'native' screenshot of the client's entire desktop using getUserMedia():
Have a look at this example:
https://www.webrtc-experiment.com/Pluginfree-Screen-Sharing/
The client will have to be using chrome...