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Is calculating an MD5 hash less CPU intensive than SHA family functions?
...On my Intel x86 (Core2 Quad Q6600, 2.4 GHz, using one core), I get this in 32-bit mode:
MD5 411
SHA-1 218
SHA-256 118
SHA-512 46
and this in 64-bit mode:
MD5 407
SHA-1 312
SHA-256 148
SHA-512 189
Figures are in megabytes per second, for a "long" message (this is wh...
What is the difference between “int” and “uint” / “long” and “ulong”?
I know about int and long (32-bit and 64-bit numbers), but what are uint and ulong ?
5 Answers
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How do I read text from the (windows) clipboard from python?
...
You can use the module called win32clipboard, which is part of pywin32.
Here is an example that first sets the clipboard data then gets it:
import win32clipboard
# set clipboard data
win32clipboard.OpenClipboard()
win32clipboard.EmptyClipboard()
win32clip...
程序员保值的4个秘密 - 杂谈 - 清泛网 - 专注C/C++及内核技术
程序员保值的4个秘密在国内，很多人说程序员是吃青春饭的，一开始说过了30岁就得转行，后来又有人35岁是一道坎……看起来好像程序员真的和风尘女子一样，注定有...在国内，很多人说程序员是吃青春饭的，一开始说过了30...
Why is there no xrange function in Python3?
...((x for x in range(10000000) if x%4 == 0), maxlen=0)
1 loops, best of 3: 1.32 s per loop
In [84]: %timeit collections.deque((x for x in xrange(10000000) if x%4 == 0), maxlen=0)
1 loops, best of 3: 1.31 s per loop
In [85]: %timeit collections.deque((x for x in iter(range(10000000)) if x%4 == 0), ma...
C++ performance challenge: integer to std::string conversion
...pairs[201] = {
"00010203040506070809"
"10111213141516171819"
"20212223242526272829"
"30313233343536373839"
"40414243444546474849"
"50515253545556575859"
"60616263646566676869"
"70717273747576777879"
"80818283848586878889"
"90919293949596979899"
};
std::string& itostr(int n,...
进程间通信（IPC）的几种方式 - C/C++ - 清泛网 - 专注C/C++及内核技术
进程间通信（IPC）的几种方式进程间通信就是在不同进程之间传播或交换信息，那么不同进程之间存在着什么双方都可以访问的介质呢？进程的用户空间是互相独立的，一般而言...进程间通信就是在不同进程之间传播或交换信息...
为什么你得学些 TCP 的知识？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
为什么你得学些 TCP 的知识？这不是指要明白 TCP 的所有东西，也不是说要通读 《TCP IP 详解》。不过懂一点 TCP 知识是很有必要的。理由如下：当我还在 Recurse...这不是指要明白 TCP 的所有东西，也不是说要通读 《TCP/IP 详解》。...
How do I decode HTML entities in Swift?
...Substring, base : Int) -> Character? {
guard let code = UInt32(string, radix: base),
let uniScalar = UnicodeScalar(code) else { return nil }
return Character(uniScalar)
}
// Decode the HTML character entity to the corresponding
// U...
WCF on IIS8; *.svc handler mapping doesn't work
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If you first ran ServiceModelReg.exe –i from the v3.0 directory, you need to also run ServiceModelReg.exe –ua to undo it before this will work.
– Scott Anderson
Mar 1 '13 at 19:47
...