大约有 37,907 项符合查询结果（耗时：0.0280秒） [XML]
Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)
...
|
show 7 more comments
40
...
How does BLAS get such extreme performance?
...a cache optimized implementation of these algorithms (i.e. you would loose more then you would win)
These algorithms are numerically not stable. As BLAS is the computational kernel of LAPACK this is a no-go.
Although these algorithms have a nice time complexity on paper, the Big O notation hides a ...
Caveats of select/poll vs. epoll reactors in Twisted
...that's roughly twice as expensive as selecting on a single fd, 50. Adding more fds below the highest isn't quite free, so it's a little more complicated than this in practice, but this is a good first approximation for most implementations.
The cost of epoll is closer to the number of file descrip...
C++ project organisation (with gtest, cmake and doxygen)
...
C++ build systems are a bit of a black art and the older the project
the more weird stuff you can find so it is not surprising that a lot
of questions come up. I'll try to walk through the questions one by one and mention some general things regarding building C++ libraries.
Separating headers an...
Git hook to send email notification on repo changes
...
Another, more modern way to do this is with git-multimail, as suggested by Chords below.
This is how you did it in 2009.
You could add something like this to your post-receive hook in $GITDIR/hooks, or use the script in the contri...
How to access data/data folder in Android device?
...ckup operation'. It's best NOT to provide a password, otherwise it becomes more difficult to read the data. Just click on 'backup my data'. The resulting 'backup.ab' file on your computer contains all application data in android backup format. Basically it's a compressed tar file. This page explains...
How to configure Visual Studio to use Beyond Compare
... Beyond Compare in tabbed mode, it can get confused when you diff or merge more than one set of files at a time from Visual Studio. To fix this, you can add the argument /solo to the end of the arguments; this ensures each comparison opens in a new window, working around the issue with tabs.
...
UILabel - auto-size label to fit text?
... lineBreakMode]];
return expectedLabelSize.width;
}
@end
You could more simply use the sizeToFit method available from the UIView class, but set the number of lines to 1 to be safe.
iOS 6 update
If you are using AutoLayout, then you have a built in solution. By setting the number of line...
Why do we always prefer using parameters in SQL statements?
...
great solution. But can you explain a bit more, why and how using parameters is safe. I mean it still looks like the sql command will be same
– Sandy
Sep 21 '11 at 20:49
...
What is the meaning of “POSIX”?
...
|
show 10 more comments
541
...