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Proper use of beginBackgroundTaskWithExpirationHandler
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The accepted answer is very helpful and should be fine in most cases, however two things bothered me about it:
As a number of people have noted, storing the task identifier as a property means that it can be overwritten if the method is called multiple times, leading to a task that...
Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
...y, this simple piece of code won't be enough to get accurate measurements most of the times because there’s a lot of activity going on under the hood of the OS, which can steal some CPU time and slow down the execution of your code. That’s why it is best to execute the tests multiple times and t...
“did you run git update-server-info” error on a Github repository
I'm using the github Gui from their website to manage my repos, and I'm getting the following error:
20 Answers
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logger configuration to log to file and print to stdout
...edited Apr 23 '19 at 16:19
sophros
6,27644 gold badges2626 silver badges5151 bronze badges
answered Dec 5 '12 at 22:43
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ImportError: No module named six
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For Mac OS X:
pip install --ignore-installed six
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Difference between sh and bash
...or the Shell Command Language) is a programming language described by the POSIX
standard.
It has many implementations (ksh88, dash, ...). bash can also be
considered an implementation of sh (see below).
Because sh is a specification, not an implementation, /bin/sh is a symlink
(or a hard link) to a...
How do I get a reference to the app delegate in Swift?
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In case anyone is still having problems, targeting OS X requires you to import Cocoa for this to work for NSApplication.sharedApplication(). I'd guess that iOS would need the equivalent.
– smaurice
Jun 9 '14 at 20:47
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UnicodeDecodeError when redirecting to file
...g of characters, and (2) string/array of bytes. This distinction has been mostly ignored for a long time because of the historic ubiquity of encodings with no more than 256 characters (ASCII, Latin-1, Windows-1252, Mac OS Roman,…): these encodings map a set of common characters to numbers between ...
Difference between java.util.Random and java.security.SecureRandom
...t clearly shows that you should never use an LCG for security-critical purposes. This also means that your random numbers are predictable right now, something you don't want for session IDs and the like.
How to break a Linear Congruential Generator
The assumption that an attacker would have to wai...
How to remove all subviews of a view in Swift?
...T: (thanks Jeremiah / Rollo)
By far the best way to do this in Swift for iOS is:
view.subviews.forEach({ $0.removeFromSuperview() }) // this gets things done
view.subviews.map({ $0.removeFromSuperview() }) // this returns modified array
^^ These features are fun!
let funTimes = ["Awesome","Craz...