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App Inventor 2 字典代码块 · App Inventor 2 中文网
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Adding a background image to a element
...s: background-repeat: no-repeat; w3schools.com/cssref/pr_background-repeat.asp
– Matt Becker
Jul 3 '13 at 12:44
...
Database sharding vs partitioning
...ontal partitioning", or sharding, is replicating [copying] the schema, and then dividing the data based on a shard key.
"Vertical partitioning" involves dividing up the schema (and the data goes along for the ride).
https://www.quora.com/Whats-the-difference-between-sharding-DB-tables-and-partitio...
Clicking the back button twice to exit an activity
...clared anonymous, and be declared as member along with the Handler aswell. Then removeCallbacks() method of Handler can be called appropriately.
The following sample is the demonstration;
private boolean doubleBackToExitPressedOnce;
private Handler mHandler = new Handler();
private final Runnable...
Abort Ajax requests using jQuery
...licking the 'stop' button on your browser. It cancels the request. You can then reuse the same XHR object for another request.
– meouw
Jan 15 '09 at 13:19
65
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Why are Python's 'private' methods not actually private?
...ing double underscores to the name, like this: __myPrivateMethod() . How, then, can one explain this
12 Answers
...
Gradle proxy configuration
...
It's fun! It is your root's build.gradle or app's build.gradle?
– Miao1007
Nov 24 '15 at 4:41
1
...
Android: ScrollView force to bottom
...rollLayout.smoothScrollBy(0, delta);
This works well.
Kotlin Extension
fun ScrollView.scrollToBottom() {
val lastChild = getChildAt(childCount - 1)
val bottom = lastChild.bottom + paddingBottom
val delta = bottom - (scrollY+ height)
smoothScrollBy(0, delta)
}
...
How do I convert a dictionary to a JSON String in C#?
...ert any Dictionary<Key,Value> to Dictionary<string,string> and then serialize it as a JSON string:
var json = new JavaScriptSerializer().Serialize(yourDictionary.ToDictionary(item => item.Key.ToString(), item => item.Value.ToString()));
It is worthwhile to note that something li...
Best way to check if object exists in Entity Framework?
...!
}
And in vb.net
If context.MyEntity.Any(function(o) o.Id = idToMatch) Then
' Match!
End If
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