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Why does Apple recommend to use dispatch_once for implementing the singleton pattern under ARC?
...he same exact time. It won't allow two instances to be created. The entire idea of dispatch_once() is "perform something once and only once", which is precisely what we're doing.
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WebView link click open default browser
...is clicked within the app it opens the default browser. If anyone has some ideas please let me know!
5 Answers
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What's the common practice for enums in Python? [duplicate]
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I have no idea why Enums are not support natively by Python.
The best way I've found to emulate them is by overridding _ str _ and _ eq _ so you can compare them and when you use print() you get the string instead of the numerical valu...
string.split - by multiple character delimiter
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Not a good idea. Consider: string input = "abc][rf-d][5". The "-" in "rf-d" will be caught as a delimiter. See the accepted answer above instead.
– Gilad Barner
Jan 6 '16 at 23:31
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Should I mix AngularJS with a PHP framework? [closed]
...individual element and populate/change the templates. Just not keen on the idea of PHP generating a wall of javascript like that just yet, and easily viewable
– Shawn Rebelo
Jan 28 '15 at 17:05
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MySQL order by before group by
...ted answer uses a subquery but it starts explaining why resorting is a bad idea (Using an ORDER BY in a subquery is not the best solution to this problem)
– fthiella
Nov 19 '17 at 21:52
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Quickly find whether a value is present in a C array?
...ance - for small routines like this, I just write asm code and have a good idea how many cycles it will take to execute. You may be able to fiddle with the C code and get the compiler to generate good output, but you may end up wasting lots of time tuning the output that way. Compilers (especially f...
How do I convert NSInteger to NSString datatype?
...o casts and no warnings on both 32-bit and 64-bit architectures. I have no idea why this is not the "recommended way".
NSString *string = [NSString stringWithFormat:@"%zd", month];
If you're interested in why this works see this question.
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How to check the differences between local and github before the pull [duplicate]
... I think that doing git fetch and git merge separately is generally a good idea.
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Good way of getting the user's location in Android
...assive provider may also be a good match for this kind of application: the idea is to use location updates whenever they are requested by another app and broadcast systemwide.
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