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 …
What does the "->" operator mean in C++? - Stack Overflow
2012年2月12日 · 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 …
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). …
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.
java - What does the colon (:) operator do? - Stack Overflow
What does the colon (:) operator do? Asked 15 years, 6 months ago Modified 1 year, 8 months ago Viewed 281k times
What is the <=> ("spaceship", three-way comparison) operator in …
2017年11月24日 · The overloadable operator <=> is a three-way comparison function and has precedence higher than < and lower than <<. It returns a type that can be compared against …
What's the right way to overload operator== for a class hierarchy?
In general I think the base class should define a operator== overload (internally or via friend class doesn't matter) which check typeid equality and calls an abstract virtual "equals" function …
What does "|=" mean? (pipe equal operator) - Stack Overflow
2013年1月13日 · I wonder if adding something like pipe equal operator to this question or any other documentation on the topic wouldn't help people searching.
What does 'dereferencing' a pointer mean in C/C++?
2011年2月10日 · However, unfortunately, according the the standard, dereferencing an invalid pointer is an undefined behaviour (with a few exceptions), even if you don't try to touch the …
C++ Operator () parenthesis overloading - Stack Overflow
2016年6月22日 · C++ Operator () parenthesis overloading Asked 14 years, 5 months ago Modified 9 years, 2 months ago Viewed 30k times