Top "Operator-keyword" questions

In several languages, the operator keyword is used to identify methods which will be used in operator overloading.

Python's Logical Operator AND

I'm a little confused with the results I'm getting with the logical operators in Python. I'm a beginner and studying …

python operator-keyword
Undefined method '>' for nil:NilClass <NoMethodError>

Ok I do have the following code def update_state_actions states.each do |state| @state_turns[state.id] -= 1 …

ruby methods operator-keyword
How efficient/fast is Python's 'in'? (Time Complexity wise)

In Python, what is the efficiency of the in keyword, such as in: a = [1, 2, 3] if 4 in a: ...

python performance time-complexity operator-keyword
OR statement handling two != clauses Python

(Using Python 2.7) I understand this is pretty elementary but why wouldn't the following statement work as written: input = int(raw_…

python operator-keyword clause
Overriding == operator. How to compare to null?

Possible Duplicate: How do I check for nulls in an ‘==’ operator overload without infinite recursion? There is probably an easy …

c# .net null overloading operator-keyword
>!= PHP operator, how to write not equal to or greater than?

How can I write not greater-than-or-equal-to in PHP? Is it >!= ?

php operator-keyword
c++ friend function - operator overloading istream >>

My question is in regards to friend functions as well as overloading the << and >>. From my …

c++ operator-overloading friend operator-keyword
What is the := operator?

In some programming languages, I see (ex.): x := y What is this := operator generally called and what does it do?

syntax programming-languages operator-keyword colon-equals
XPath operator "!=". How does it work?

XML document: <doc> <A> <Node>Hello!</Node> </A> <B&…

xpath equals operator-keyword
ternary operator without else in C

I want to use ternary operator without else in C. How do I do it. (a)? b: nothing; something like …

c operator-keyword if-statement ternary