What does the !! (double exclamation mark) operator do in JavaScript ...
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 <> (angle brackets) mean in MS-SQL Server?
Nov 8, 2013 · 30 <> 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 operand …
What does the `%` (percent) operator mean? - Stack Overflow
1 That is the modulo operator, which finds the remainder of division of one number by another. So in this case a will be the remainder of b divided by c.
What is the difference between the | and || or operators?
Aug 29, 2008 · 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 said, …
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 is the other way …
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). When the …
c - What does tilde (~) operator do? - Stack Overflow
The bitwise NOT operator has an interesting property that when applied on numbers represented by two's complement, it changes the number's sign and then subtracts one (as you can see in the …
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 conditional …
scope resolution operator - What does the - Stack Overflow
Mar 17, 2011 · What does this symbol mean? AirlineTicket::AirlineTicket ()@PaulR Not everyone who arrives upon this question is looking to learn C++. I, for example, just happened to be skimming …
What is the difference between & and && in Java? - Stack Overflow
Apr 9, 2011 · I always thought that && operator in Java is used for verifying whether both its boolean operands are true, and the & operator is used to do Bit-wise operations on two integer …