
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 <> (angle brackets) mean in MS-SQL Server?
Nov 8, 2013 · <> operator means not equal to in MS SQL. It compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left …
How do you use the ? : (conditional) operator in JavaScript?
Jun 7, 2011 · Just to clarify the name: ternary is the type of operator (i.e. it has 3 parts). The name of that specific ternary operator is the conditional operator. There just happens to only be one …
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's the right way to overload operator== for a class hierarchy?
bool operator==(const B& lhs, const B& rhs) { return lhs.isEqual( rhs ) && lhs.bar == rhs.bar; } By avoiding having an operator== that works on abstract base classes and keeping compare …
Which equals operator (== vs ===) should be used in JavaScript ...
Dec 11, 2008 · The === operator is called a strict comparison operator, it does differ from the == operator. Lets take 2 vars a and b. For "a == b" to evaluate to true a and b need to be the …
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 …
What is the difference between the | and || or operators?
The & operator does "run these 3 functions, and if one of them returns false, execute the else block", while the | does "only run the else block if none return false" - can be useful, but as …
What does the !! (double exclamation mark) operator do in …
I don't consider any of your alternatives easy to understand. Worse, there is at least one case where using equality operator x != 0 gives a different result than Boolean(x) or !!x: try [] for x. …
When should I use ?? (nullish coalescing) vs || (logical OR)?
The ?? operator was added to TypeScript 3.7 back in November 2019. And more recently, the ?? operator was included in ES2020, which is supported by Node 14 (released in April 2020). …