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What do the plus and minus signs mean in Objective-C next to a method?
...ass methods:-
Are methods which are declared as static. The method can be called without creating an instance of the class. Class methods can only operate on class members and not on instance members as class methods are unaware of instance members. Instance methods of the class can also not be cal...
How to flatten tree via LINQ?
...<T>> f
) => e.SelectMany(c => f(c).Flatten(f)).Concat(e);
Call this function like this:
IEnumerable<MyNode> tree = ....
var res = tree.Flatten(node => node.Elements);
If you would prefer flattening in pre-order rather than in post-order, switch around the sides of the Co...
AJAX Mailchimp signup form integration
...form action url. Use dataType: 'jsonp' and jsonp: 'c' for Your jQuery ajax call.
– czerasz
Sep 5 '13 at 12:41
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Postgres: INSERT if does not exist already
... FROM invoices
);
$$
LANGUAGE 'sql';
and just call it:
SELECT fn_upd_invoices('12345', 'TRUE')
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Implementing IDisposable correctly
...ould have any unmanaged resources to be freed you should include Finalizer calling Dispose(false), that will allow GC to call Finalizer when doing garbage collection (in case Dispose was not called yet) and properly free unmanaged resources.
– mariozski
May 17 ...
How to set background color of an Activity to white programmatically?
How can I set the background color of an Activity to white programatically?
11 Answers
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how to deal with google map inside of a hidden div (Updated picture)
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So basically you only instantialize the map when the div is shown? Is there any way to do this so that the map object is only instantialized once (on page load)?
– lucas
Feb 14 '17 at 12:13
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MongoDB SELECT COUNT GROUP BY
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I wonder why it's called "sum" rather than "count"
– Royi Namir
Aug 19 at 18:50
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How to use setArguments() and getArguments() methods in Fragments?
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You have a method called getArguments() that belongs to Fragment class.
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How to resume Fragment from BackStack if exists
...he title and selection. Also add an OnBackStackChangedListener and have it call your update method if there is a valid Fragment.
For example, in the Activity's onCreate(), add
getSupportFragmentManager().addOnBackStackChangedListener(new OnBackStackChangedListener() {
@Override
public void on...