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presentViewController and displaying navigation bar
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It is true that if you present a view controller modally on the iPhone, it will always be presented full screen no matter how you present it on the top view controller of a navigation controller or any other way around. But you can always show the navigation bar with the follo...
What's the difference between & and && in MATLAB?
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@neuronet it isn't really about efficiency, more that it permits a construct where the first expression guarantees a condition without which the second expression may cause a run-time error. e.g. d != 0 && 1/d vs d !=0 & 1/d - the ...
How should I use Outlook to send code snippets?
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Pattern: Clear (Custom Color(RGB(253,253,217))), Style: Linked, Automatically update, Quick Style
Based on: HTML Preformatted
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What is the difference between self::$bar and static::$bar in PHP?
...keyword. In this case, your Foo class defines a protected static property called $bar. When you use self in the Foo class to refer to the property, you're referencing the same class.
Therefore if you tried to use self::$bar elsewhere in your Foo class but you had a Bar class with a different value ...
What is the difference between string primitives and String objects in JavaScript?
...rms of functionality. That aside, the behaviour you are trying to name is called auto-boxing. So what actually happens is that a primitive is converted to its wrapper type when a method of the wrapper type is invoked. Put simple:
var s = 'test';
Is a primitive data type. It has no methods, it is ...
how do I use UIScrollView in Interface Builder?
...sed UIScrollView successfully in the past by manipulating it programmatically, I'm having trouble getting it to work by setting it up exclusively in Interface Builder.
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android layout: This tag and its children can be replaced by one and a compound drawable
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Hey look at that, all I had to do was search. stackoverflow.com/a/6671544/1224741
– QED
Aug 8 '12 at 1:40
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iPhone Simulator location
Where on my machine is the iPhone simulator installed?
17 Answers
17
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Android get color as string value
...olor(...)" and type it out again, use intellisense to complete the method call with the Android deprecated getColor call and you're good.
– Wes Winn
Apr 25 '17 at 23:00
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Using unset vs. setting a variable to empty
...t; unset var
/home/user1> echo $var
-bash: var: unbound variable
So really, it depends on how you are going to test the variable.
I will add that my preferred way of testing if it is set is:
[[ -n $var ]] # True if the length of $var is non-zero
or
[[ -z $var ]] # True if zero length
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