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iPhone - Grand Central Dispatch main thread
...h_queue_t backgroundQueue = dispatch_queue_create("com.mycompany.myqueue", 0);
dispatch_async(backgroundQueue, ^{
int result = <some really long calculation that takes seconds to complete>;
dispatch_async(dispatch_get_main_queue(), ^{
[self updateMyUIWithResul...
Cannot change column used in a foreign key constraint
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edited Aug 9 '17 at 20:53
Jacob Bond
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answered Nov 28 '12 at 13...
What do all of Scala's symbolic operators mean?
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530
I divide the operators, for the purpose of teaching, into four categories:
Keywords/reserved s...
How does “do something OR DIE()” work in PHP?
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edited Sep 12 '12 at 10:24
Community♦
111 silver badge
answered Jan 11 '09 at 6:16
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Unable to forward search Bash history similarly as with CTRL-r
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edited Jun 20 '11 at 17:25
idbrii
9,15233 gold badges4747 silver badges9191 bronze badges
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What would be the Unicode character for big bullet in the middle of the character?
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207
http://www.unicode.org is the place to look for symbol names.
● BLACK CIRCLE 25CF
⚫...
What exactly is Python's file.flush() doing?
...is a good thing, you should make both calls as instructed.
Addendum in 2018.
Note that disks with cache mechanisms is now much more common than back in 2013, so now there are even more levels of caching and buffers involved. I assume these buffers will be handled by the sync/flush calls as well,...
Error :Request header field Content-Type is not allowed by Access-Control-Allow-Headers
I created an mvc4 web api project using vS2012. I used following tutorial to solve the Cross-Origin Resource Sharing, "http://blogs.msdn.com/b/carlosfigueira/archive/2012/07/02/cors-support-in-asp-net-web-api-rc-version.aspx". It is working successfully, and i post data from client side to server s...
JavaScript % (modulo) gives a negative result for negative numbers
...rs♦
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answered Dec 17 '10 at 3:59
EnriqueEnrique
8,66077 gold b...
How do I check if a type provides a parameterless constructor?
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170
The Type class is reflection. You can do:
Type theType = myobject.GetType(); // if you have an ...