大约有 44,000 项符合查询结果（耗时：0.0452秒） [XML]
Spring Data JPA find by embedded object property
...ne findByIdAndTwoId(Long oneId, Long twoId); and results in a query of the form: select ...... from one one_ left outer join two two_ on one_.two_id = two_.id where one_id = ? and two_.id = ?
– TroJaN
May 4 at 17:17
...
Unique Key constraints for multiple columns in Entity Framework
...ute is where you can specify the order of the columns in the index.
More information: MSDN
share
|
improve this answer
|
follow
|
...
What is the right way to check for a null string in Objective-C?
... since [NSNull null] is documented to be a singleton so you can just check for pointer equality. See Topics for Cocoa: Using Null.
So a good test might be:
if (title == (id)[NSNull null] || title.length == 0 ) title = @"Something";
Note how you can use the fact that even if title is nil, title.l...
How can I trigger a JavaScript event click
...nk in my page. I am trying to automate a number of clicks on the hyperlink for testing purposes. Is there any way you can simulate 50 clicks on the hyperlink using JavaScript?
...
What does FrameLayout do?
...s the most recent, so it is automatically placed on top of the ImageView.
For example:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageVi...
What JSON library to use in Scala? [closed]
...
Unfortunately writing a JSON library is the Scala community's version of coding a todo list app.
There are quite a variety of alternatives. I list them in no particular order, with notes:
parsing.json.JSON - Warning this lib...
How do I push to GitHub under a different username?
...ur SSH key and git settings will be independent.
If this is not an option for you, then your friend should add your SSH key to her Github account.
Although, previous solution will keep you pushing as yourself, but it will allow you to push into her repo. If you don't want this and work in differen...
Linear Layout and weight in Android
...is funny weight value in the Android documentations.
Now I want to try it for the first time but it isn't working at all.
...
How to remove a column from an existing table?
...o figure out what to do with other tables/columns. One option is to remove foreign keys and keep referenced data in other tables.
Another option is to find all referencing columns and remove them as well if they are not needed any longer.
In such cases the real challenge is finding all foreign ke...
How to access a preexisting collection with Mongoose?
...
Where in the docs can i find this information? This really helpped but there's no place explaining the plural thing.
– StudioWorks
Apr 7 '14 at 20:31
...