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recursion versus iteration
... course every recursion can be modeled as a kind of loop : that's what the CPU will ultimately do. And the recursion itself, more directly, means putting the function calls and scopes in a stack. But changing your recursive algorithm to a looping one might need a lot of work and make your code less ...
Hidden Features of PHP? [closed]
...n't really call it hidden... If you've ever googled for method parameters, etc, you would end up at php.net.
– John Bubriski♦
Mar 23 '09 at 17:04
27
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Why is arr = [] faster than arr = new Array?
...ntext which may contain the "arguments" object, locally defined variables, etc. If we cannot find it in the Activation object, we begin looking up the scope chain until we reach the global scope. If nothing is found, we throw a ReferenceError.
Once we've located the variable declaration, we invoke...
How accurate is python's time.sleep()?
...kernel unable to schedule your process as soon as you'd like, even without CPU contention. That's what the realtime kernels are trying to fix, I think. But, unless you really need realtime behavior, simply using a high tick rate (kernel HZ setting) will get you not-guaranteed-but-high-resolution s...
Is there any reason for using WebGL instead of 2D Canvas for 2D games/apps?
...p://glslsandbox.com/e#207.3
This kind of 2D display would only run on the CPU, not the GPU, with a 2D canvas. All of the computations would be implemented in JavaScript, and would not be as parallel as the GPU even with the help of web workers. This is just one example of course, all kinds of int...
How is Docker different from a virtual machine?
...s it manage to provide a full filesystem, isolated networking environment, etc. without being as heavy?
19 Answers
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How can I limit Parallel.ForEach?
... To be clear cores and threads are not the same thing. Depending on the CPU, there are a different number of threads per core, usually 2 per core. For example, if you have a 4 core CPU with 2 threads per core, then you have a max of 8 threads. To adjust @jKlaus comment var opts = new ParallelO...
How do I generate a random int number?
... is generated using sound, mouse click, and keyboard timings, thermal temp etc. Below goes the code for the same.
using (RNGCryptoServiceProvider rg = new RNGCryptoServiceProvider())
{
byte[] rno = new byte[5];
rg.GetBytes(rno);
int randomvalue = BitConverter.ToInt32(rno, 0);
...
Visual Studio 64 bit?
... for the built in version and standalone. You have to target "x86" or "Any CPU" so that you can see your xaml, then retarget 64 so you can run and debug. Ditto edit and continue. The list goes on. It is so totally not awesome, I do not have words fit to print.
– Dirk Bester
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Why is this F# code so slow?
...llowing numbers:
> levenshtein str ("foo" + str);;
Real: 00:00:03.938, CPU: 00:00:03.900, GC gen0: 275, gen1: 1, gen2: 0
val it : int = 3
> levenshtein_inlined str ("foo" + str);;
Real: 00:00:00.068, CPU: 00:00:00.078, GC gen0: 0, gen1: 0, gen2: 0
val it : int = 3
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