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How does C compute sin() and other math functions?
...e that actually runs when you call sin() on a typical x86-64 Linux system. It is apparently faster than the fsin assembly instruction. Source code: sysdeps/ieee754/dbl-64/s_sin.c, look for __sin (double x).
This code is very complex. No one software algorithm is as fast as possible and also accurat...
Java HashMap performance optimization / alternative
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As many people pointed out the hashCode() method was to blame. It was only generating around 20,000 codes for 26 million distinct objects. That is an average of 1,300 objects per hash bucket = very very bad. However if I turn the two arrays into a number in base 52 I am guaranteed to get...
JavaFX Application Icon
Is it possible to change the application icon using JavaFX, or does it have to be done using Swing?
17 Answers
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How can I use a DLL file from Python?
What is the easiest way to use a DLL file from within Python ?
7 Answers
7
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Why does ContentResolver.requestSync not trigger a sync?
...slide 26. My content provider is working, and my sync works when I trigger it from the Dev Tools Sync Tester application, however when I call ContentResolver.requestSync(account, authority, bundle) from my ContentProvider, my sync is never triggered.
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Could not load file or assembly or one of its dependencies
I'm having another of these "Could not load file or assembly or one of its dependencies" problems.
43 Answers
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How to sort a HashSet?
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A HashSet does not guarantee any order of its elements. If you need this guarantee, consider using a TreeSet to hold your elements.
However if you just need your elements sorted for this one occurrence, then just temporarily create a List and sort that:
Set<?>...
Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
I've seen definitions in C
8 Answers
8
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A std::map that keep track of the order of insertion?
... stores an integer value to an unique string identifier, and I do look up with the string. It does mostly what I want, except for that it does not keep track of the insertion order. So when I iterate the the map to print out the values, they are sorted according to the string; but I want them to be ...
How to pull specific directory with git
I have a project with git, and I just want to clone or pull a specific directory, like myproject/javascript just like subversion does.
make some changes, commit and push back again.
It's possible?
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