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Associativity of “in” in Python?
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1 in [] in 'a' is evaluated as (1 in []) and ([] in 'a').
Since the first condition (1 in []...
Generate a random number in the range 1 - 10
...here a way to tell pg's random() function to get me only numbers between 1 and 10?
7 Answers
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How to find where gem files are installed
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10 Answers
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How to initialise memory with new operator in C++?
...ut it actually has special syntax for value-initializing an array:
new int[10]();
Note that you must use the empty parentheses — you cannot, for example, use (0) or anything else (which is why this is only useful for value initialization).
This is explicitly permitted by ISO C++03 5.3.4[expr.new]...
Scala: what is the best way to append an element to an Array?
...repend it:
0 +: array :+ 4
should produce:
res3: Array[Int] = Array(0, 1, 2, 3, 4)
It's the same as with any other implementation of Seq.
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Angularjs if-then-else construction in expression
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Angular expressions do not support the ternary operator before 1.1.5, but it can be emulated li...
Check if a number has a decimal place/is a whole number
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Using modulus will work:
num % 1 != 0
// 23 % 1 = 0
// 23.5 % 1 = 0.5
Note that this is based on the numerical value of the number, regardless of format. It treats numerical strings containing whole numbers with a fixed decimal point the same as intege...
In Scala, what exactly does 'val a: A = _' (underscore) mean?
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val a: A = _ is a compile error. For example:
scala> val a: String = _
<console>:1: ...
Performance of FOR vs FOREACH in PHP
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My personal opinion is to use what makes sense in the context. Personally I almost never use ...