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The calling thread cannot access this object because a different thread owns it
...
This is a common problem with people getting started. Whenever you update your UI elements from a thread other than the main thread, you need to use:
this.Dispatcher.Invoke(() =>
{
...// your code here.
});
You can also use control.Dispatcher.CheckAccess() to ...
What's the difference between an element and a node in XML?
...pes" chapter.
An XML element is everything from (including) the element's start tag to (including) the element's end tag.
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Replace all elements of Python NumPy Array that are greater than some value
...at, you can use the third part of the slice, which is usually neglected: a[start:stop:step] gives you the elements of the array from start to stop, but instead of every element, it takes only every step (if neglected, it is 1 by default). So to set all the evens to zero, you could do a[::2] = 0
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How do I create a new GitHub repo from a branch in an existing repo?
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I started with @user292677's idea, and refined it to solve my problem:
Create the new-repo in github.
cd to your local copy of the old repo you want to extract from, which is set up to track the new-project branch that will b...
How to update two tables in one statement in SQL Server 2005?
...RE T1.id = T2.id
and T1.id = '011008';
UPDATE Table2
SET Table2.WAprrs = 'start,stop'
FROM Table1 T1, Table2 T2
WHERE T1.id = T2.id
and T1.id = '011008';
COMMIT;
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The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead [dupl
...at is throwing these deprecation errors then you can almost certainly just start using them right away—i.e. without any installation effort.
They differ slightly, but offer a number of advantages over the old extension including API support for transactions, stored procedures and prepared stateme...
Custom fonts in iOS 7
...rting Files.
Finally, you would like to list all your fonts when the app starts just to see useable name for your font. You will do that with this little piece of code:
NSArray *fontFamilies = [UIFont familyNames];
for (int i = 0; i < [fontFamilies count]; i++)
{
NSString *fontFamily = [fo...
ExecutorService that interrupts tasks after a timeout
... issue with your implementation. I need the timeout to begin when the task starts execution, as I commented earlier. I think the only way to do that is to use the beforeExecute hook.
– Edward Dale
May 3 '10 at 16:28
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How do I escape characters in c# comments?
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In plain C# comments you can use any character (except */ if you started the comment with /*, or the newline character if you started the comment with //). If you are using XML comments then you can use a CDATA section to include '<' and '>' characters.
See this MSDN blog article fo...
Thread context switch Vs. process context switch
...hich is used by the incoming thread. As a result, the incoming thread will start its life with avalanche of cache misses, thus flushing old and useless data from the caches and loading the new data from memory. The same is true for TLB (Translation Look Aside Buffer, which is on the CPU). In the cas...