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Why do we usually use || over |? What is the difference?
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If you use the || and && forms, rather than the | and & forms of these operators, Java will not bother to evaluate the right-hand operand alone.
It's a matter of if you want to short-circuit the evaluation or not -- most of the time you want to....
What does asterisk * mean in Python? [duplicate]
...
See Function Definitions in the Language Reference.
If the form *identifier is
present, it is initialized to a tuple
receiving any excess positional
parameters, defaulting to the empty
tuple. If the form **identifier is
present, it is initialized to a new
dictionary recei...
Common MySQL fields and their appropriate data types
...monly used fields such as these. For instance, I have determined that an unformatted US phone number is too big to be stored as an unsigned int, it must be at least a bigint.
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How do you use the ? : (conditional) operator in JavaScript?
...ed Aug 8 '19 at 12:57
CertainPerformance
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answered Jun 7 '11 at 2:13
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What's the best way to put a c-struct in an NSArray?
...structure p, not a pointer to it. The @encode directive provides all the information necessary about how big the structure is. When you release the NSValue (or when the array does), its copy of the structure is destroyed. If you've used getValue: in the meantime, you're fine. See the "Using Values" ...
CSS :after not adding content to certain elements
...es include images (<img> tags),
plugins (<object> tags), and form elements (<button>, <textarea>,
<input>, and <select> tags). All other elements types can be referred
to as non-replaced elements.
:before and :after only work with non-replaced elements.
F...
C++ templates Turing-complete?
...it :-) This code compiles (gcc-4.9) but gives no output - a little more information, like a blog post, would be great.
– Alfred Bratterud
Mar 11 '15 at 8:45
2
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Switch statement fallthrough in C#?
..., or using the special goto case (see case 1) or goto default (see case 2) forms:
switch (/*...*/) {
case 0: // shares the exact same code as case 1
case 1:
// do something
goto case 2;
case 2:
// do something else
goto default;
default:
// do...
Why doesn't JUnit provide assertNotEquals methods?
...read it the question was not about historical interest, but about a way to formulate the assertion "these two objects are not equal" in a JUnit test. I answered that. Considering the "why is/was there no assertNotEqual" I'd say that's because it's a specialized assert that's not needed as often as a...
Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
...ignment Operators. An extract:
A compound assignment expression of the form E1 op= E2 is equivalent to E1 = (T)((E1) op (E2)), where T is the type of E1, except that E1 is evaluated only once.
An example cited from §15.26.2
[...] the following code is correct:
short x = 3;
x += 4.6...