c - What does tilde (~) operator do? - Stack Overflow
The ~ operator in C++ (and other C-like languages like C and Java) performs a bitwise NOT operation - all the 1 bits in the operand are set to 0 and all the 0 bits in the operand are set to …
What does the !! (double exclamation mark) operator do in …
The !! operator reassures the lint tool that what you wrote is what you meant: do this operation, then take the truth value of the result. A third use is to produce logical XOR and logical XNOR.
What does the "->" operator mean in C++? - Stack Overflow
Feb 12, 2012 · The -> operator is used with a pointer (or pointer-like object) on the LHS and a structure or class member on the RHS (lhs->rhs). It is generally equivalent to (*lhs).rhs, which …
syntax - What is the := operator? - Stack Overflow
Nov 13, 2018 · This is a new operator that is coming to Python 3.8 and actually had a role in BDFL Guido van Rossum's early retirement. Formally, the operator allows what's called an …
What is a Question Mark "?" and Colon ":" Operator Used for?
Apr 26, 2012 · Ternary operator refers to any operator with three parameters, thus this is a ternary operator but not the ternary operator. Major languages (C#, Java, PHP) consider it a …
scope resolution operator - What does the - Stack Overflow
Mar 17, 2011 · 56 :: is the scope resolution operator - used to qualify names. In this case it is used to separate the class AirlineTicket from the constructor AirlineTicket(), forming the qualified …
The R %*% operator - Stack Overflow
The %*% operator is used to multiply two matrices. I didn't realise 'matrix multiplication' was an established algebraic method so it was useful to learn the underlying calculation, not yet …
What's the right way to overload operator== for a class hierarchy?
In general I think the base class should define a operator== overload (internally or via friend class doesn't matter) which check typeid equality and calls an abstract virtual "equals" function …
math - What does the ^ (XOR) operator do? - Stack Overflow
Mar 6, 2021 · The XOR ( ^ ) is an logical operator that will return 1 when the bits are different and 0 elsewhere. A negative number is stored in binary as two's complement. In 2's complement, …
What does "|=" mean? (pipe equal operator) - Stack Overflow
Jan 13, 2013 · I wonder if adding something like pipe equal operator to this question or any other documentation on the topic wouldn't help people searching.