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GCD to perform task in main thread
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155
No, you do not need to check whether you’re already on the main thread. By dispatching the b...
What's the difference between “Architectures” and “Valid Architectures” in Xcode Build Settings?
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Architectures are the ones you want to build, valid architectures are the ones you could conce...
What are “first class” objects?
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180
In short, it means there are no restrictions on the object's use. It's the same as
any other o...
Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars
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edited Jul 22 '19 at 21:33
community wiki
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Find which commit is currently checked out in Git
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You have at least 5 different ways to view the commit you currently have checked out into your...
What is the difference between user variables and system variables?
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132
Right-click My Computer and go to Properties->Advanced->Environmental Variables...
What...
How to sort an array of hashes in ruby
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edited Jul 27 '16 at 14:15
Snowman
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Rails 4 - passing variable to partial
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163
You need the full render partial syntax if you are passing locals
<%= render @users, :loca...
How to safely open/close files in python 2.4
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See docs.python.org:
When you’re done with a file, call f.close() to close it and free u...
intellij - spring is not being recognized (Unmapped Spring configuration)
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edited Feb 6 '15 at 9:13
answered May 13 '14 at 9:12
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