January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second Edition
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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.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.