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Get users by name property using Firebase
...primitives for managing lists of data:
Write to Firebase with a unique, known key:
ref.child('users').child('123').set({ "first_name": "rob", "age": 28 })
Append to lists with an auto-generated key that will automatically sort by time written:
ref.child('users').push({ "first_name": "rob", "age...
Check play state of AVPlayer
Is there a way to know whether an AVPlayer playback has stalled or reached the end?
11 Answers
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commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated
...So, if they were originally sitting inside a <form>, then they would now not anymore sit in a <form>. See also p:commandbutton action doesn't work inside p:dialog
Bug in the framework. For example, RichFaces has a "conversion error" when using a rich:calendar UI element with a defaultLa...
Is there any overhead to declaring a variable within a loop? (C++)
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@toto A variable like this could also be nowhere – the var variable is initialized but never used, so a reasonable optimiser can just remove it completely (except the second snippet if the variable was used somewhere after the loop).
– CiaPan...
Convert a string to an enum in C#
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You can use extension methods now:
public static T ToEnum<T>(this string value, bool ignoreCase = true)
{
return (T) Enum.Parse(typeof (T), value, ignoreCase);
}
And you can call them by the below code (here, FilterType is an enum type):
Fil...
Arguments or parameters? [duplicate]
.... Once defined, the parameters of a function are fixed and won't change.
Now consider an invocation of that function:
int result = divide(8, 4);
In this case, 8 and 4 are the arguments passed to the function. The numerator parameter is set to the value of the argument 8, and denominator is set...
jQuery check if an input is type checkbox?
... case sensitive: jsfiddle.net/gtza0uuL. It is not with .prop, but I don't know if that can be gauranteed. Note: you can't just do .toLowerCase() either because 'type' may be undefined.
– xr280xr
Jun 29 '15 at 22:49
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java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
...rence of the FragmentActivity solved the problem. My code looks as follows now:
public class MyFragmentActivity extends FragmentActivity implements OnFriendAddedListener {
private static WeakReference<MyFragmentActivity> wrActivity = null;
@Override
public void onCreate(Bundle s...
Why use the 'ref' keyword when passing an object?
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i dont know why visual studio still doesnt show explicitly what is passed
– MonsterMMORPG
Apr 5 '17 at 12:09
3
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Can angularjs routes have optional parameter values?
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It looks like Angular has support for this now.
From the latest (v1.2.0) docs for $routeProvider.when(path, route):
path can contain optional named groups with a question mark (:name?)
share...