大约有 11,400 项符合查询结果（耗时：0.0348秒） [XML]
The modulo operation on negative numbers in Python
I've found some strange behaviour in Python regarding negative numbers:
8 Answers
8
...
PHP Sort a multidimensional array by element containing date
...
Use usort() and a custom comparison function:
function date_compare($a, $b)
{
$t1 = strtotime($a['datetime']);
$t2 = strtotime($b['datetime']);
return $t1 - $t2;
}
usort($array, 'date_compare');
EDIT: Your data is organized in an array of arrays. To better distinguish those, le...
Use dynamic (variable) string as regex pattern in JavaScript
I want to add a (variable) tag to values with regex, the pattern works fine with PHP but I have troubles implementing it into JavaScript.
...
jQuery animate backgroundColor
I am trying to animate a change in backgroundColor using jQuery on mouseover.
17 Answers
...
Java HashMap performance optimization / alternative
I want to create a large HashMap but the put() performance is not good enough. Any ideas?
25 Answers
...
What's the purpose of git-mv?
...ame newname
git add newname
git rm oldname
i.e. it updates the index for both old and new paths automatically.
share
|
improve this answer
|
follow
|
...
Algorithm to return all combinations of k elements from n
...to write a function that takes an array of letters as an argument and a number of those letters to select.
71 Answers
...
Converting RGB to grayscale/intensity
When converting from RGB to grayscale, it is said that specific weights to channels R, G, and B ought to be applied. These weights are: 0.2989, 0.5870, 0.1140.
...
Convert nested Python dict to object?
I'm searching for an elegant way to get data using attribute access on a dict with some nested dicts and lists (i.e. javascript-style object syntax).
...
Add custom messages in assert?
Is there a way to add or edit the message thrown by assert? I'd like to use something like
8 Answers
...