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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 nullish coalescing operator ?? is supported, I typically use it instead of the OR operator || (unless there's a good reason not to).

What does <> (angle brackets) mean in MS-SQL Server?
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 is not equal to the right operand; otherwise, the result is FALSE. If either or both operands are NULL, see the topic SET ANSI_NULLS (Transact-SQL). See here : Not Equal To

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.

c - What does tilde (~) operator do? - Stack Overflow
I recently saw the above operator in a code,I googled for it but found nothing.The code is below.Please describe what actually does this operator do? #include<stdio.h> int main() { unsig...

What does the "->" operator mean in C++? - Stack Overflow
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 of accessing a member.

What are bitwise shift (bit-shift) operators and how do they work?
The Operators >> is the arithmetic (or signed) right shift operator. >>> is the logical (or unsigned) right shift operator. << is the left shift operator, and meets the needs of both logical and arithmetic shifts. All of these operators can be applied to integer values (int, long, possibly short and byte or char).

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 said, often it's a design smell. There is a Second use of the | and & operator though: Bitwise Operations.

scope resolution operator - What does the - Stack Overflow
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 some C++ code and wanted to get the general idea of what the program is doing and needed a quick reference :)

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 is a Question Mark "?" and Colon ":" Operator Used for?
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 operator, and call it the ?: operator. Occasionally (JavaScript) it is called the conditional operator.

 

 

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