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Windows threading: _beginthread vs _beginthreadex vs CreateThread C++
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CreateThread() is a raw Win32 API call for creating another thread of control at the kernel level.
_beginthread() & _beginthreadex() are C runtime library calls that call CreateThread() behind the scenes. Once CreateThread() has returned, _beginthread/ex() t...
sql “LIKE” equivalent in django query
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And for case insensitive search use __icontains -> result = table.objects.filter(string__icontains='pattern')
– Hitesh Garg
Aug 11 '15 at 15:56
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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...ng'.
I'd expect them to be translated into something reasonably efficient for your current platform, whether it be one of those fancy bit-twiddling algorithms, or a single instruction.
A useful trick if your input can be zero is __builtin_clz(x | 1): unconditionally setting the low bit without m...
how to get the current working directory's absolute path from irb
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It's almost been 10 years, but still, thank you for this answer.
– Nick Schwaderer
Feb 13 '19 at 15:31
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编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...hrowInfo
{
unsigned int attributes;
_PMFN pmfnUnwind;
int (__cdecl*pForwardCompat)(...);
_CatchableTypeArray *pCatachableTypeArray;
} _ThrowInfo;
结构体中重要的成员是_CatchableTypeArray。它包含了程序运行时抛出对象的类新信息(RTTI)。本文中示例非常简单...
Is there an online name demangler for C++? [closed]
...t paste it into some textbox on some website and have the names un-mangled for me.
5 Answers
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Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
... or a function( Xvec, centrevec ), e.g. Lqmetric below
p: for minkowski metric -- local mod cdist for 0 < p < 1 too
verbose: 0 silent, 2 prints running distances
out:
centres, k x dim
Xtocentre: each X -> its nearest centre, ints N -> k
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Why doesn't Python have a sign function?
...more verbose) can be used to delegate to the end user the desired behavior for edge cases - which sometimes might require the call to cmp(x,0).
I don't know why it's not a built-in, but I have some thoughts.
copysign(x,y):
Return x with the sign of y.
Most importantly, copysign is a superset o...
Python (and Python C API): __new__ versus __init__
...nt, and (usually) returns a new instance of that type. Thus it is suitable for use with both mutable and immutable types.
__init__ accepts an instance as the first argument and modifies the attributes of that instance. This is inappropriate for an immutable type, as it would allow them to be modifi...
Repeat string to certain length
... return (string_to_expand * ((length/len(string_to_expand))+1))[:length]
For python3:
def repeat_to_length(string_to_expand, length):
return (string_to_expand * (int(length/len(string_to_expand))+1))[:length]
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