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How do I check OS with a preprocessor directive?
.... Here are a few of them, with links to where they're found:
Windows
_WIN32 Both 32 bit and 64 bit
_WIN64 64 bit only
Unix (Linux, *BSD, Mac OS X)
See this related question on some of the pitfalls of using this check.
unix
__unix
__unix__
Mac OS X
__APPLE__
__MACH__
Both are define...
Compile time string hashing
...is is a little bit late, but I succeeded in implementing a compile-time CRC32 function with the use of constexpr. The problem with it is that at the time of writing, it only works with GCC and not MSVC nor Intel compiler.
Here is the code snippet:
// CRC32 Table (zlib polynomial)
static constexpr ...
In Visual Studio C++, what are the memory allocation representations?
...
322
This link has more information:
http://en.wikipedia.org/wiki/Magic_number_(programming)
* 0...
unsigned int vs. size_t
...M. Brandenburg
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answered Sep 25 '08 at 7:08
Remo.DRemo.D
14.8k55 gold badge...
Creating a favicon [closed]
...
Eduardo RussoEduardo Russo
3,52322 gold badges1717 silver badges3030 bronze badges
...
Byte order mark screws up file reading in Java
...ines 5 types of BOMs:<ul>
* <li><pre>00 00 FE FF = UTF-32, big-endian</pre></li>
* <li><pre>FF FE 00 00 = UTF-32, little-endian</pre></li>
* <li><pre>FE FF = UTF-16, big-endian</pre></li>
* <li><pre&g...
Split string, convert ToList() in one line
...
var numbers = sNumbers.Split(',').Select(Int32.Parse).ToList();
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C# - How to get Program Files (x86) on Windows 64 bit
...86 Program Files directory in all of these three Windows configurations:
32 bit Windows
32 bit program running on 64 bit Windows
64 bit program running on 64 bit windows
static string ProgramFilesx86()
{
if( 8 == IntPtr.Size
|| (!String.IsNullOrEmpty(Environment.GetEnvironmentVa...
Declare a constant array
...it constant.
The nearest you can get is:
var letter_goodness = [...]float32 {.0817, .0149, .0278, .0425, .1270, .0223, .0202, .0609, .0697, .0015, .0077, .0402, .0241, .0675, .0751, .0193, .0009, .0599, .0633, .0906, .0276, .0098, .0236, .0015, .0197, .0007 }
Note the [...] instead of []: it ens...
Why is a round-trip conversion via a string not safe for a double?
...f87daf7fa),
/*6*/ I64(0xefb3ab16c59b14a0),
/*7*/ I64(0x850fadc09923329c),
/*8*/ I64(0x93ba47c980e98cde),
/*9*/ I64(0xa402b9c5a8d3a6e6),
/*10*/ I64(0xb616a12b7fe617a8),
/*11*/ I64(0xca28a291859bbf90),
/*12*/ I64(0xe070f78d39275566),
/*13*/ I64(0xf92e0c3537826140),
...