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What does SynchronizationContext do?
...in a background thread without first synchronizing (through any of several means, such as this or the Invoke pattern) then an exception will be thrown.
What this does is save the synchronization context prior to creating the background thread, then the background thread uses the context.Post method...
ERROR 1452: Cannot add or update a child row: a foreign key constraint fails
...nnot add or update a child row: a foreign key constraint fails essentially means that, you are trying to add a row to your Ordrelinje table for which no matching row (OrderID) is present in Ordre table.
You must first insert the row to your Ordre table.
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Do you have to put Task.Run in a method to make it async?
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First, let's clear up some terminology: "asynchronous" (async) means that it may yield control back to the calling thread before it starts. In an async method, those "yield" points are await expressions.
This is very different than the term "asynchronous", as (mis)used by the MSDN docum...
Error: “The sandbox is not in sync with the Podfile.lock…” after installing RestKit with cocoapods
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Regarding I.3 - did you mean the 'Build Phases > Link Binary With Libraries' section ?
– kraftydevil
Sep 29 '14 at 21:45
1
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How to center a button within a div?
... Your welcs (sorry for the harshness, glad you have a sense of humor) I meant 100px. I didn't realize you wrote "fixed", but still I think this answer won't be good in most situations
– CodyBugstein
Mar 19 '14 at 14:53
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Looking for a clear definition of what a “tokenizer”, “parser” and...
... output in another unamed domain, e.g., F(X) -> Y Pretty much this means you can only call this a "function". If you insist that the domain of X is <StreamOfCharacter,Grammar> and the domain of Y is Tree with the property that it reflects the shape of the grammar, then F(X,G) -> ...
Python regular expressions return true/false
...turn value. Because you're getting <_sre.SRE_Match object at ...> it means that this will evaluate to true. When the regular expression isn't matched you'll the return value None, which evaluates to false.
import re
if re.search("c", "abcdef"):
print "hi"
Produces hi as output.
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Facebook Like Button - how to disable Comment pop up?
...the entire page's DOM for XFBML, and regenerating a new Like button, which means more event handlers, a repaint and reflow, a few new requests, etc. I would actually call this a bad solution, or perhaps not a solution at all since what you're doing is like upgrading your browser by buying a new comp...
Most simple but complete CMake example
...ks. Every time I think that I am getting closer to understand how CMake is meant to be written, it vanishes in the next example I read. All I want to know is, how should I structure my project, so that my CMake requires the least amount of maintainance in the future. For example, I don't want to upd...
twitter bootstrap navbar fixed top overlapping site
...p CSS.
and in the Bootstrap 4 docs...
Fixed navbars use position: fixed, meaning they’re pulled from the
normal flow of the DOM and may require custom CSS (e.g., padding-top
on the ) to prevent overlap with other elements.
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