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How can I get a precise time, for example in milliseconds in Objective-C?
...in integer type. It's an alias of UnsignedWide, which is a struct with two 32-bit integer fields. You can use UnsignedWideToUInt64() instead of the cast if you prefer.
– Ken Thomases
Aug 24 '13 at 0:14
...
What is time_t ultimately a typedef to?
...mpliant systems implement the time_t type as a signed
integer (typically 32 or 64 bits wide)
which represents the number of seconds
since the start of the Unix epoch:
midnight UTC of January 1, 1970 (not
counting leap seconds). Some systems
correctly handle negative time values,
while ...
is vs typeof
...
oliver4888
322 bronze badges
answered Oct 8 '08 at 20:21
MagicKatMagicKat
9,21166 gold ba...
Is it possible to have multiple statements in a python lambda expression?
...54, 37, 79, 25, 46, 72, 10, 59, 24, 68, 23, 13, 34, 41, 94, 29, 62, 2, 50, 32, 11, 97, 98, 3, 70, 93, 1, 36, 87, 47, 20, 73, 45, 0, 65, 57, 6, 76, 16, 85, 95, 61, 4, 77, 21, 81, 82, 30, 53, 51, 42, 67, 74, 8, 15, 83, 5, 9, 78, 66, 44, 27, 19, 91, 90, 18, 49, 86, 22, 75, 71, 88, 92, 33, 89, 69, 80, 3...
C# 能否获取一个对象所占内存的大小？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...道一个对象占多少内存呢？
第一个问题：很快想到是类的非静态的字段、属性。
第二个问题：首先想到的是sizeof()。
下面开始验证，首先来验证值类型，验证代码如下：
int size = sizeof (int); //4个字节
注意点：size...
Hash and salt passwords in C#
...28-bit salt, 256-bit subkey, 10000 iterations.
* Format: { 0x01, prf (UInt32), iter count (UInt32), salt length (UInt32), salt, subkey }
* (All UInt32s are stored big-endian.)
*/
public string HashPassword(string password)
{
var prf = KeyDerivationPrf.HMACSHA256;
var rng = RandomNumberGe...
Python dictionary: Get list of values for list of keys
...
jpp
124k2323 gold badges154154 silver badges204204 bronze badges
answered Aug 26 '13 at 22:10
Jon Clements♦J...
从异构软件开发者的角度看异构计算 - 操作系统(内核) - 清泛网 - 专注C/C++...
...相当长的一段未来时期中主宰计算平台[1,2]。那到底什么是异构计算呢？
作为软件开发者，我认为异构计算就是在异构平台上执行计算，因此我们应该先对异构的计算平台有一定理解，然后在了解如何在异构平台上执行计算。...
Error to install Nokogiri on OSX 10.9 Maverick?
...sr/bin/gcc-4.2 -o conftest -I/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/include/ruby-1.9.1/x86_64-darwin11.4.0 -I/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/include/ruby-1.9.1/ruby/backward -I/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/include/ruby-1.9.1 -I. -I/usr/local/Cellar/li...
Markup XML解析库下载（Markup.h 和 Markup.cpp） - 源码下载 - 清泛网 - 专注C/C++及内核技术
...d options
// MARKUP_WCHAR wide char (2-byte UTF-16 on Windows, 4-byte UTF-32 on Linux and OS X)
// MARKUP_MBCS ANSI/double-byte strings on Windows
// MARKUP_STL (default except VC++) use STL strings instead of MFC strings
// MARKUP_SAFESTR to use string _s functions in VC++ 2005 (_MSC_VER >= 140...