大约有 46,000 项符合查询结果（耗时：0.0622秒） [XML]
Rails: Using build with a has_one association in rails
In this example, I create a user with no profile , then later on create a profile for that user. I tried using build with a has_one association but that blew up. The only way I see this working is using has_many . The user is supposed to only have at most one profile .
...
Are there any O(1/n) algorithms?
Are there any O(1/n) algorithms?
32 Answers
32
...
Expand/collapse section in UITableView in iOS
Could somebody tell me the way to perform UITableView expandable/collapsible animations in sections of UITableView as below?
...
How do you load custom UITableViewCells from Xib files?
The question is simple: How do you load custom UITableViewCell from Xib files? Doing so allows you to use Interface Builder to design your cells. The answer apparently is not simple due to memory managment issues. This thread mentions the issue and suggests a solution, but is pre NDA-release and...
Why should I care about lightweight vs. annotated tags?
I switched from Subversion to Git as my day-to-day VCS last year and am still trying to grasp the finer points of "Git-think".
...
postgresql COUNT(DISTINCT …) very slow
...follow
|
edited Oct 15 '16 at 21:51
answered Feb 6 '13 at 15:17
...
Why is char[] preferred over String for passwords?
...lection) you can get rid of the data before garbage collection kicks in.
With an array, you can explicitly wipe the data after you're done with it. You can overwrite the array with anything you like, and the password won't be present anywhere in the system, even before garbage collection.
So yes, ...
Reload .profile in bash shell script (in unix)?
...follow
|
edited Feb 20 '12 at 12:41
bluish
22k2222 gold badges107107 silver badges163163 bronze badges
...
How to unescape HTML character entities in Java?
...EscapeUtils.unescapeHtml4() for this:
Unescapes a string containing entity
escapes to a string containing the
actual Unicode characters
corresponding to the escapes. Supports
HTML 4.0 entities.
share
|
...
Deep Learning（深度学习）学习笔记整理系列之（三） - 大数据 & AI - 清泛...
Deep Learning（深度学习）学习笔记整理系列之（三）Deep_Learning_Series_3Deep Learning（深度学习）学习笔记整理系列zouxy09@qq.comhttp: blog.csdn.net zouxy09作者：Zouxyversion 1.0 2013-04-08原文网址：h...Deep Learning（深度学习）学习笔记整理系列
zo...