Short-Circuit Evaluation of Complex Conditions
The parts of an expression containing && or || operators are evaluated only until it’s known whether the condition is true or false. Thus, evaluation of the expression
(gender == FEMALE) && (age >= 65)
stops immediately if gender is not equal to FEMALE (i.e., the entire expression is false) and continues if gender is equal to FEMALE (i.e., the entire expression could still be true if the condition age >= 65 is true). This feature of conditional AND and conditional OR expressions is called short-circuit evaluation.
Common Programming Error 5.8
In expressions using ...
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