Logical AND Operator
Definition - What does Logical AND Operator mean?
The logical AND operator is an operator that performs a logical conjunction on two statements. It only yields a value of "true" when both statements are true. If one of the two statements is false, then the logical AND operator yields a "false" value.
Programming languages use logical AND operators to ascertain conditions that result from predefined criteria. The logical AND operator has different representations in different programming languages, including the ampersand (&) used in Java and C++, and the keyword AND used in Visual Basic.
Techopedia explains Logical AND Operator
Logical AND operators are often used in conditional and loop statements. Short-circuit versions of the logical AND operator exist in many programming languages, like the (&&) operator in C++ and Java and the keyword "AndAlso" in Visual Basic.
Short-circuiting does not evaluate the right-hand operand if the result of the left-hand operand is false, as the overall result should be false. Short-circuiting might improve performance; however, if the right-hand statement performs additional actions, such as an assignment operation, short-circuiting skips those actions.