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Accessing UI (Main) Thread safely in WPF
... @l46kok This can have different reasons (console app, hosting from winforms etc.). As @WolfgangZiegler said, you can use any UIElement for it. I just usually use Application.Current for it since it looks cleaner to me.
– Botz3000
Jul 24 '12 at 6:51...
Alternatives to dispatch_get_current_queue() for completion blocks in iOS 6?
...ust stylistic points, they're entirely necessary if your API is to be safe from deadlocks or other edge-case behavior that WILL otherwise hang you from the nearest tree someday. :-)
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Get keys from HashMap in Java
...ke BidiMap (a map that allows bidirectional lookup between key and values) from Apache's Commons Collections - also be aware that several different keys could be mapped to the same value.
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How do I return multiple values from a function in C?
...t produces a result int and a result string , how do I return them both from a function?
8 Answers
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How to prevent buttons from submitting forms
...; return false;">Remove Last Item</button>
...that'll keep them from triggering a submit action when an exception occurs in the event handler. Then, fix your removeItem() function so that it doesn't trigger an exception:
function removeItem() {
var rows = $('form tr');
if ( rows.leng...
Postgresql not creating db with “createdb” as superuser, yet not outputting errors [duplicate]
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createdb is a command line utility which you can run from bash and not from psql.
To create a database from psql, use the create database statement like so:
create database [databasename];
Note: be sure to always end your SQL statements with ;
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Determine if Android app is being used for the first time
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@Alan you are right, this answer is no longer valid from Android Marshmallow.
– Ioane Sharvadze
May 12 '17 at 17:03
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design a stack such that getMinimum( ) should be O(1)
... has better space in general. We still have the min stack, but we only pop from it when the value we pop from the main stack is equal to the one on the min stack. We only push to the min stack when the value being pushed onto the main stack is less than or equal to the current min value. This allows...
How to tell where a header file is included from?
... answer. Only unfortunate problem is that I couldn't get it to stop Clang from trying to compile the file normally, so I ended up using clang++ -MM -H (which is a slightly useful combination).
– rookie1024
Feb 17 '17 at 17:36
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Python multiprocessing PicklingError: Can't pickle
... multiple argument functions, as you need for class methods.
>>> from pathos.multiprocessing import ProcessingPool as Pool
>>> p = Pool(4)
>>> class Test(object):
... def plus(self, x, y):
... return x+y
...
>>> t = Test()
>>> p.map(t.plus, x, y)...