大约有 47,000 项符合查询结果（耗时：0.0694秒） [XML]
Setting background colour of Android layout element
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You can use simple color resources, specified usually inside res/values/colors.xml.
<color name="red">#ffff0000</color>
and use this via android:background="@color/red". This color can be used anywhere else too, e.g. as a text color. Reference it in XML the s...
Can you center a Button in RelativeLayout?
... If you have match_parent for your width, it's already centred horizontally.
– ataulm
Sep 4 '15 at 11:27
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Change from SQLite to PostgreSQL in a fresh Rails project
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@mmichael it really depends on how you have your postgres set up. Using postgres.app, brew, or native if you are on MacOS X Lion+ have different restrictions on their default setup. So if username and password do not apply, you can leave th...
Hide text using css
...ow: hidden" to prevent seird selection box shooting off to the left (especially with links)
– willoller
Jan 23 '09 at 4:03
4
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Set size on background image with CSS?
...S3 unleash the powers
This is possible to do in CSS3 with background-size.
All modern browsers support this, so unless you need to support old browsers, this is the way to do it.
Supported browsers:
Mozilla Firefox 4.0+ (Gecko 2.0+), Microsoft Internet Explorer 9.0+, Opera 10.0+, Safari 4.1+ (webki...
What is the simplest SQL Query to find the second largest value?
... What if there are multiple second highest... Then this will not give all the Tuples
– Parth Satra
Oct 16 '14 at 0:09
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Selecting only first-level elements in jquery
...; li a")
But you would need to set a class on the root ul if you specifically want to target the outermost ul:
<ul class="rootlist">
...
Then it's:
$("ul.rootlist > li a")....
Another way of making sure you only have the root li elements:
$("ul > li a").not("ul li ul a")
It lo...
Volatile boolean vs AtomicBoolean
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They are just totally different. Consider this example of a volatile integer:
volatile int i = 0;
void incIBy5() {
i += 5;
}
If two threads call the function concurrently, i might be 5 afterwards, since the compiled code will be somewh...
How to verify Facebook access token?
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The officially supported method for this is:
GET graph.facebook.com/debug_token?
input_token={token-to-inspect}
&access_token={app-token-or-admin-token}
See the check token docs for more information.
An example respon...
How do I filter an array with AngularJS and use a property of the filtered object as the ng-model at
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I see where you're going with that, but I really didn't want a repeater. The property I'll actually be filtering by is an identity column, so it's unique. But I see that this would be the correct way to solve the generic problem.
– Bernhard Hofman...