大约有 16,317 项符合查询结果（耗时：0.0297秒） [XML]
How to revert multiple git commits?
...
Expanding what I wrote in a comment
The general rule is that you should not rewrite (change) history that you have published, because somebody might have based their work on it. If you rewrite (change) history, you would make problems with merging their...
How can I get color-int from color resource?
Is there any way to get a color-int from a color resource?
12 Answers
12
...
How to check that a string is a palindrome using regular expressions?
...
The answer to this question is that "it is impossible". More specifically, the interviewer is wondering if you paid attention in your computational theory class.
In your computational theory class you learned about finite state machines. A finite state machine is comp...
How to create GUID / UUID?
I'm trying to create globally-unique identifiers in JavaScript. I'm not sure what routines are available on all browsers, how "random" and seeded the built-in random number generator is, etc.
...
What is an index in SQL?
...
An index is used to speed up searching in the database. MySQL have some good documentation on the subject (which is relevant for other SQL servers as well):
http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
An index can be used to efficiently find all rows matching some c...
Using Git, how could I search for a string across all branches?
...GitHub. You can also filter by:
the language: language:
the repository name (including the username): repo:
the file path: path:
share
|
improve this answer
|
follow
...
Setting up foreign keys in phpMyAdmin?
I'm setting up a database using phpMyAdmin. I have two tables ( foo and bar ), indexed on their primary keys . I am trying to create a relational table ( foo_bar ) between them, using their primary keys as foreign keys.
...
What requests do browsers' “F5” and “Ctrl + F5” refreshes generate?
...
Generally speaking:
F5 may give you the same page even if the content is changed, because it may load the page from cache. But Ctrl-F5 forces a cache refresh, and will guarantee that if the content is changed, you will get the new content.
...
How often should you use git-gc?
...
It depends mostly on how much the repository is used. With one user checking in once a day and a branch/merge/etc operation once a week you probably don't need to run it more than once a year.
With several dozen developers working on ...
Is it possible to create static classes in PHP (like in C#)?
...You can have static classes in PHP but they don't call the constructor automatically (if you try and call self::__construct() you'll get an error).
Therefore you'd have to create an initialize() function and call it in each method:
<?php
class Hello
{
private static $greeting = 'Hello';
...