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What does “default” mean after a class' function declaration?
...e that function automatically.
With the introduction of move constructors and move assignment operators, the rules for when automatic versions of constructors, destructors and assignment operators are generated has become quite complex. Using = default and = delete makes things easier as you don't ...
UIView's frame, bounds, center, origin, when to use what?
UIView has the properties frame , bounds , center , and origin , and they all seem to be interrelated. Most of the time, I deal with frame when setting the position and size of a UIView . I understand that frame is using global coordinate system and bounds is using coordinate of the lo...
What is the javascript MIME type for the type attribute of a script tag? [duplicate]
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This is a common mistake. The MIME type for javascript wasn't standardized for years. It's now officially: "application/javascript".
The real kicker here is that most browsers won't use that attribute anyway, at least not in the case of the script tag. They actually peek inside the pac...
Why is String.chars() a stream of ints in Java 8?
...d, the design decision behind this was to prevent the explosion of methods and classes.
Still, personally I think this was a very bad decision, and there should, given they do not want to make CharStream, which is reasonable, different methods instead of chars(), I would think of:
Stream<Chara...
In OS X Lion, LANG is not set to UTF-8, how to fix it?
I try to setup postgress in OS X Lion, and find that is not correctly setup the LOCALE environment var.
5 Answers
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Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
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NOTE: PyPy is more mature and better supported now than it was in 2013, when this question was asked. Avoid drawing conclusions from out-of-date information.
PyPy, as others have been quick to mention, has tenuous support for C extensions. It has...
Should I instantiate instance variables on declaration or in the constructor?
...he compiler.
The first variant is more readable.
You can't have exception handling with the first variant.
There is additionally the initialization block, which is as well put in the constructor(s) by the compiler:
{
a = new A();
}
Check Sun's explanation and advice
From this tutorial:
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Using ls to list directories and their total sizes
... it possible to use ls in Unix to list the total size of a sub-directory and all its contents as opposed to the usual 4K that (I assume) is just the directory file itself?
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Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception?
Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception ?
2 Answers
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What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
What does ArrayIndexOutOfBoundsException mean and how do I get rid of it?
25 Answers
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