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How to find topmost view controller on iOS
I've run into a couple of cases now where it would be convenient to be able to find the "topmost" view controller (the one responsible for the current view), but haven't found a way to do it.
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How to print a percentage value in python?
...>>> 1 / 3
0.3333333333333333
# The above 33% example would could now be written without the explicit
# float conversion:
>>> print "{0:.0f}%".format(1/3 * 100)
33%
# Or even shorter using the format mini language:
>>> print "{:.0%}".format(1/3)
33%
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Why shouldn't `'` be used to escape single quotes?
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@Anon.: ' is now part of the HTML standard.
– Paul D. Waite
Sep 19 '13 at 9:49
add a comment
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JAXB creating context and marshallers cost
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great answer. I can be confident now based on your experience as lead on JAXB.
– Vladimir
Sep 13 '11 at 12:22
7
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iPhone OS: How do I create an NSDate for a specific date?
...es
Examples are often the easiest way to learn. Here are a few examples.
Now
This one is the easiest.
let currentDateTime = Date()
February 20, 2017
// Specify date components
var dateComponents = DateComponents()
dateComponents.year = 2017
dateComponents.month = 2
dateComponents.day = 20
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Haskell offline documentation?
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That's great to know. Is there something like that on linux?
– Andriy Drozdyuk
Feb 27 '12 at 14:32
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How to check if a file exists in Documents folder?
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objectAtIndex:0 can be now replaced with firstObject
– Govind
Nov 20 '13 at 8:39
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How do I rename a local Git branch?
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What I really wanted to know was whether this will necessarily effect the remote branch when/if you push
– PandaWood
Jan 23 '12 at 0:15
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How to get the first non-null value in Java?
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That method is now deprecated, and the recommended alternative is MoreObjects.firstNonNull
– davidwebster48
Feb 17 '15 at 0:58
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Making the iPhone vibrate
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Swift 2.0+
AudioToolbox now presents the kSystemSoundID_Vibrate as a SystemSoundID type, so the code is:
import AudioToolbox.AudioServices
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate)
AudioServicesPlayAlertSound(kSystemSoundID_Vibrate)
Ins...