大约有 46,000 项符合查询结果（耗时：0.0661秒） [XML]
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...ior applies to any default value that is subsequently mutated (e.g. hashes and strings), not just arrays.
TL;DR: Use Hash.new { |h, k| h[k] = [] } if you want the most idiomatic solution and don’t care why.
What doesn’t work
Why Hash.new([]) doesn’t work
Let’s look more in-depth at why...
$(window).scrollTop() vs. $(document).scrollTop()
...
@d2burke scrollTop() is a getter and scrollTop(value) is a setter. scrollTop() without arguments does not change the scroll position.
– user1107907
Feb 19 '15 at 22:20
...
Is it better to reuse a StringBuilder in a loop?
...e of StringBuilder.
In a very long loop I'm manipulating a StringBuilder and passing it to another method like this:
14 A...
Difference between float and decimal data type
What difference does it make when I use float and decimal data types in MySQL?.
12 Answers
...
Why main does not return 0 here?
...
That rule was added in the 1999 version of the C standard. In C90, the status returned is undefined.
You can enable it by passing -std=c99 to gcc.
As a side note, interestingly 9 is returned because it's the return of printf which just wrote 9 characters.
...
Resuming git-svn clone
...ion. After about 6 hours of importing (it's a big repo), my computer went and slept on me. Is there a way to resume the operation without redoing all of the initial work?
...
jquery if div id has children
...uery object that contains the children. So you just need to check the size and see if it has at least one child.
share
|
improve this answer
|
follow
|
...
difference between #if defined(WIN32) and #ifdef(WIN32)
... yeah, but you could also cascade #ifdef UNIX with #ifndef WIN32, and get the same flexibility (not as readable, I agree)
– jpinto3912
Nov 11 '09 at 11:42
2
...
How to retrieve an element from a set without removing it?
...pop(), since iteration seems to sort the elements. I would prefer them in random order...
– Daren Thomas
Sep 12 '08 at 20:17
10
...
How to fix Array indexOf() in JavaScript for Internet Explorer browsers
...ough rep to edit the question but feel free to remove the ECMAScript lingo and replace with the appropriate wording. Thanks Again
– Bobby Borszich
Nov 16 '09 at 19:47
12
...