大约有 43,000 项符合查询结果（耗时：0.0515秒） [XML]
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
I was looking for the fastest way to popcount large arrays of data. I encountered a very weird effect: Changing the loop variable from unsigned to uint64_t made the performance drop by 50% on my PC.
...
Getting a better understanding of callback functions in JavaScript
I understand passing in a function to another function as a callback and having it execute, but I'm not understanding the best implementation to do that. I'm looking for a very basic example, like this:
...
Parse date string and change format
I have a date string with the format 'Mon Feb 15 2010'. I want to change the format to '15/02/2010'. How can I do this?
9...
How to assign a heredoc value to a variable in Bash?
I have this multi-line string (quotes included):
11 Answers
11
...
Difference between fprintf, printf and sprintf?
Can anyone explain in simple English about the differences between printf , fprintf , and sprintf with examples?
8 Ans...
Optimizing away a “while(1);” in C++0x
Updated, see below!
8 Answers
8
...
Executing Shell Scripts from the OS X Dock?
How do I set up a shell script to execute from the Mac OSX dock? It seems that simply creating a shortcut will open the file in my editor. Is there a flag I need to set somewhere to tell it to run instead of opening it for editing?
...
Image resizing client-side with JavaScript before upload to the server
I am looking for a way to resize an image client-side with JavaScript (really resize, not just change width and height).
I know it's possible to do it in Flash but I would like to avoid it if possible.
...
How to put a label on an issue in GitHub if you are not a contributor / owner?
I've submitted an issue for a project on GitHub which is not mine and I'm not a contributor, but I cannot find a way to label my issue. Is there a way for me to label it, or is this only available for contributors?
...
Which is more efficient, a for-each loop, or an iterator?
Which is the most efficient way to traverse a collection?
7 Answers
7
...