大约有 40,000 项符合查询结果（耗时：0.1098秒） [XML]
How to prepend a string to a column value in MySQL?
...
You can use the CONCAT function to do that:
UPDATE tbl SET col=CONCAT('test',col);
If you want to get cleverer and only update columns which don't already have test prepended, try
UPDATE tbl SET col=CONCAT('test',col)
WHERE col NOT LIKE 'test%';
...
Android - Set fragment id
How can I set a Fragment 's Id so that I can use getSupportFragmentManager().findFragmentById(R.id.--) ?
7 Answers
...
@OneToMany List vs Set difference
...e is to make two queries (which avoids the cartesian product), or to use a Set instead of a List for at least one of the collections.
It's often hard to use Sets with Hibernate when you have to define equals and hashCode on the entities and don't have an immutable functional key in the entity.
...
ASP.NET_SessionId + OWIN Cookies do not send to browser
...ntation directly wraps response headers collection and accordingly updates Set-Cookie header. OWIN ASP.NET host (Microsoft.Owin.Host.SystemWeb) just wraps System.Web.HttpResponse and it's headers collection. So when new cookie is created through OWIN, response Set-Cookie header is changed directly.
...
Percentage Height HTML 5/CSS
I am trying to set a <div> to a certain percentage height in CSS, but it just remains the same size as the content inside it. When I remove the HTML 5 <!DOCTYTPE html> however, it works, the <div> taking up the whole page as desired. I want the page to validate, so what shoul...
How set the default repository
How can I set default remote repository for mercurial local repository?
1 Answer
1
...
Google Maps v2 - set both my location and zoom in
My question is, does anyone know how to set google maps up, to open up both my location and in a zoomed-in view?
11 Answers...
How to clear an ImageView in Android?
...
I used to do it with the dennis.sheppard solution:
viewToUse.setImageResource(0);
it works but it is not documented so it isn't really clear if it effects something else in the view (you can check the ImageView code if you like, i didn't).
I think the best solution is:
viewToUse.se...
Empty set literal?
...
No, there's no literal syntax for the empty set. You have to write set().
share
|
improve this answer
|
follow
|
...
How do I run multiple instances of Android Studio
...
Your Android Studio was set to open project in the same window. You can change that, so it asks whether to open new window while opening other project.
Do this:
Go to: File -> Settings -> Appearance & Behavior -> System Settings ->...