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  1. 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.

  2. 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.

  3. How do you use the ? : (conditional) operator in JavaScript?

    Jun 7, 2011 · What is the ?: (question mark and colon operator aka. conditional or "ternary") operator and how can I use it?

  4. 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 …

  5. c++ - Why override operator ()? - Stack Overflow

    Nov 25, 2008 · This fails to answer the question of "why override operator() ", and provides an example lifted straight from the accepted answer just with the names and numbers slightly …

  6. 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 …

  7. 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). …

  8. Which equals operator (== vs ===) should be used in JavaScript ...

    Dec 11, 2008 · The strict equality operator (===) behaves identically to the abstract equality operator (==) except no type conversion is done, and the types must be the same to be …

  9. c++ - What is the difference between the dot (.) operator and ...

    May 11, 2025 · The arrow operator is like dot, except it dereferences a pointer first. foo.bar() calls method bar() on object foo, foo->bar calls method bar on the object pointed to by pointer foo.

  10. 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 …