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How to check a not-defined variable in JavaScript
I wanted to check whether the variable is defined or not. For example, the following throws a not-defined error
14 Answer...
What does the `forall` keyword in Haskell/GHC do?
...'m beginning to understand how the forall keyword is used in so-called "existential types" like this:
8 Answers
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How to get indices of a sorted array in Python
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Something like next:
>>> myList = [1, 2, 3, 100, 5]
>>> [i[0] for i in sorted(enumerate(myList), key=lambda x:x[1])]
[0, 1, 2, 4, 3]
enumerate(myList) gives you a list containing tuples of (index, value):
[(0, 1), (1, 2)...
How to compare versions in Ruby?
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The Gem::Version... syntax made me thought I would need to install a gem. But it was not required.
– Guillaume
Oct 17 '12 at 17:08
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Cocoa: What's the difference between the frame and the bounds?
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The bounds of an UIView is the rectangle, expressed as a location (x,y) and size (width,height) relative to its own coordinate system (0,0).
The frame of an UIView is the rectangle, expressed as a location (x,y) and size (width,height) relative to the superview it is...
Error: “Cannot modify the return value” c#
I'm using auto-implemented properties.
I guess the fastest way to fix following is to declare my own backing variable?
8 A...
How to format a number as percentage in R?
One of the things that used to perplex me as a newby to R was how to format a number as a percentage for printing.
10 Answe...
Best way to create custom config options for my Rails app?
...hat if I set it in environment.rb , it's available in my views, which is exactly what I want...
14 Answers
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Trusting all certificates with okHttp
...add a socket factory to my okHttp client that trusts everything while a proxy is set. This has been done many times over, but my implementation of a trusting socket factory seems to be missing something:
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What are the basic rules and idioms for operator overloading?
...s according to votes, rather than the time they were given, here's an index of the answers in the order in which they make most sense:
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