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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...Ref.transaction(function (current_value) {
return (current_value || 0) + 1;
});
For more info, see https://www.firebase.com/docs/transactions.html
UPDATE:
Firebase recently released Cloud Functions. With Cloud Functions, you don't need to create your own Server. You can simply write JavaScript ...
How to use setArguments() and getArguments() methods in Fragments?
I have 2 fragments: (1)Frag1 (2)Frag2.
6 Answers
6
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CSS display: table min-height not working
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answered Jun 30 '12 at 16:58
swiderswider
3,23722 gold badges2323 silver badges3838 bronze badges
...
Multi-gradient shapes
...olor.GREEN, Color.WHITE, Color.WHITE},
new float[]{0,0.5f,.55f,1}, Shader.TileMode.REPEAT);
return lg;
}
};
PaintDrawable p=new PaintDrawable();
p.setShape(new RectShape());
p.setShaderFactory(sf);
Basically, the int array allows you to select multiple color stops, and the...
How do I increase the RAM and set up host-only networking in Vagrant?
I would like to increase the RAM to at least 1 GB and I would like to configure “Host-Only” networking to use "199.188.44.20".
...
Do fragments really need an empty constructor?
...is whole class example should show the usage.
/**
* Created by chris on 21/11/2013
*/
public class StationInfoAccessibilityFragment extends BaseFragment implements JourneyProviderListener {
public static final StationInfoAccessibilityFragment newInstance(String crsCode) {
StationInfo...
How do you check whether a number is divisible by another number (Python)?
I need to test whether each number from 1 to 1000 is a multiple of 3 or a multiple of 5. The way I thought I'd do this would be to divide the number by 3, and if the result is an integer then it would be a multiple of 3. Same with 5.
...
Spring JPA @Query with LIKE
...Spring documentation, this method is equal to
" where user.username like ?1 ". It is not good for me, as I already told that I'm trying to get all users whose username contains ...
...
How do I choose between Semaphore and SemaphoreSlim?
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edited Aug 26 '13 at 17:00
culix
8,41955 gold badges2929 silver badges4848 bronze badges
answ...
Difference between addSubview and insertSubview in UIView class
...
103
The only difference is in where the view is added: whether it is the frontmost view (addSubvi...