大约有 42,000 项符合查询结果（耗时：0.0571秒） [XML]
Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier
I have two user Objects and while I try to save the object using
36 Answers
36
...
When to use UICollectionView instead of UITableView?
...on the requirements. How the application flows determines which type of UI to integrate into the application.
People mainly use the UICollectionview for creating types of UIs with multiple images shown in a grid. This would have complex logic using UITableView, but with UICollectionview, it would b...
C++ Structure Initialization
Is it possible to initialize structs in C++ as indicated below
16 Answers
16
...
Converting a UNIX Timestamp to Formatted Date String
Using PHP, I want to convert UNIX timestamps to date strings similar to this: 2008-07-17T09:24:17Z
9 Answers
...
Do Facebook Oauth 2.0 Access Tokens Expire?
...th the Oauth 2.0 authorization in Facebook and was wondering if the access tokens Facebook passes out ever expire. If so, is there a way to request a long-life access token?
...
How to change the docker image installation directory?
From what I can tell, docker images are installed to /var/lib/docker as they are pulled. Is there a way to change this location, such as to a mounted volume like /mnt ?
...
Best way to convert text files between character sets?
What is the fastest, easiest tool or method to convert text files between character sets?
20 Answers
...
Which is preferred: Nullable.HasValue or Nullable != null?
...
The compiler replaces null comparisons with a call to HasValue, so there is no real difference. Just do whichever is more readable/makes more sense to you and your colleagues.
share
|
...
How to get the current URL within a Django template?
I was wondering how to get the current URL within a template.
10 Answers
10
...
ASP.NET MVC JsonResult Date Format
...
Just to expand on casperOne's answer.
The JSON spec does not account for Date values. MS had to make a call, and the path they chose was to exploit a little trick in the javascript representation of strings: the string literal "/...