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Timer function to provide time in nano seconds using C++
...en RDTSC and your system's built-in clock facilities (which will likely be based on clock(), clock_gettime() and/or QueryPerformanceCounter.
Note that the RDTSC instruction is x86-specific. QueryPerformanceCounter is Windows only. And clock_gettime() is POSIX only. Below I introduce two new cloc...
C/C++ NaN constant (literal)?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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In Java, what is the best way to determine the size of an object?
... with piles of data rows. I give the user a summary of the number of rows based on types of data, but I want to make sure that I don't read in too many rows of data and cause OutOfMemoryError s. Each row translates into an object. Is there an easy way to find out the size of that object programm...
ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...);
Buffer.BlockCopy(buffer2, 0, dst, 0x11, 0x20);
return Convert.ToBase64String(dst);
}
Verifying:
public static bool VerifyHashedPassword(string hashedPassword, string password)
{
byte[] buffer4;
if (hashedPassword == null)
{
return false;
}
if (password == nu...
How do I find which rpm package supplies a file I'm looking for?
...86_64 : The GNU versions of grep pattern matching utilities.
Repo : base
Matched from:
Filename : /bin/grep
You may prefer the output and speed of the repoquery tool, available in the yum-utils package.
sudo yum install yum-utils
repoquery --whatprovides '*bin/grep'
grep-0:2.5.1-55.el5....
OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...v packagekit-media.repo packagekit-media.repo.bak
配置源
vi CentOS-Base.repo
[base]
name=CentOS-$releasever - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/6.7/os/$basearch/
http://mirrors.aliyuncs.com/centos/6.7/os/$basearch/
#mirro...
How to find the type of an object in Go?
...
Based on a barebones benchmark, the reflect approach is surprisingly more efficient gist.github.com/mrap/7f08c9549289b6aea2923c27888e7e3e
– Mike Rapadas
Apr 6 '17 at 20:53
...
How do I create a SHA1 hash in ruby?
...
There's also Digest::SHA1.base64digest 'foo'
– andrewrk
Jan 14 '12 at 1:31
14
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Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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What's the valid way to include an image with no src?
...ogramming.com/2009/03/15/the-tiniest-gif-ever
<img src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=" width="0" height="0" alt="" />
Edit based on comment below:
Of course, you must consider your browser support requirements. No support for IE7 or less is notable. http://cani...