Operator | search
Click here to view Operator news from 60+ newspapers.
Bookmark or Share- 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 are the pointer-to-member operators ->* and .* in C++?Yes, I've seen this question and this FAQ, but I still don't understand what ->* and .* mean in C++. Those pages provide information about the operators (such as overloading), but don't seem to
- What does <> (angle brackets) mean in MS-SQL Server? 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 is <=> (the 'Spaceship' Operator) in PHP 7? - Stack OverflowIts a new operator for combined comparison. Similar to strcmp() or version_compare() in behavior, but it can be used on all generic PHP values with the same semantics as = , > . It returns 0 if both operands are equal, 1 if the left is greater, and -1 if the right is greater.
- What does the !! (double exclamation mark) operator do in JavaScript ...I suspect this is a leftover from C++ where people override the ! operator, but not the bool operator. So to get a negative (or positive) answer in that case, you would first need to use the ! operator to get a Boolean, but if you wanted to check the positive case you would use !!.
More
