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NSOperation vs Grand Central Dispatch
I'm learning about concurrent programming for iOS. So far I've read about NSOperation/NSOperationQueue and GCD . What are the reasons for using NSOperationQueue over GCD and vice versa?
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Are tuples more efficient than lists in Python?
...there any performance difference between tuples and lists when it comes to instantiation and retrieval of elements?
8 Answ...
How do I get a plist as a Dictionary in Swift?
I am playing around with Apple's new Swift programming language and have some problems...
26 Answers
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How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?
A common trick for vertical positioning elements is to use the following CSS:
7 Answers
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Code block in numbered list (Wiki syntax)
In MediaWiki (wikipedia's) wiki syntax, is there a way to have a numbered list with a code block in the middle?
7 Answers
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Is it better to specify source files with GLOB or each file individually in CMake?
... several ways to specify the source files for a target.
One is to use globbing ( documentation ), for example:
5 Answers
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Using boolean values in C
C doesn't have any built-in boolean types. What's the best way to use them in C?
18 Answers
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Mapping over values in a python dictionary
...do this is to use a dict comprehension:
my_dictionary = {k: f(v) for k, v in my_dictionary.items()}
In python 2.7, use the .iteritems() method instead of .items() to save memory. The dict comprehension syntax wasn't introduced until python 2.7.
Note that there is no such method on lists either; ...
How to use Morgan logger?
I cannot log with Morgan. It doesn't log info to console. The documentation doesn't tell how to use it.
10 Answers
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How to lazy load images in ListView in Android
I am using a ListView to display some images and captions associated with those images. I am getting the images from the Internet. Is there a way to lazy load images so while the text displays, the UI is not blocked and images are displayed as they are downloaded?
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