7 ms·
Doesn't this depend on strict lazy evaluation? I could imagine if the implementation underneath changed (possibly to take advantage of parallel execution), if a
by planckscnst 16y ago
Doesn't this depend on strict lazy evaluation? I could imagine if the implementation underneath changed (possibly to take advantage of parallel execution), if any segment had side effects, it would be horrible.
- lygaret 16y agoI can't think of a case where lazy evaluation would be required, only that the semantics of the && and || operators not change. It's defined as part of the language that && will not evaluate the right hand side unless the left hand side is truthy. A lot more than using this stuff as branching would break if some implementation arbitrarily decided to not follow that anymore.
- thienan 16y agoThanks
- RodgerTheGreat 16y agoI think you're confusing lazy evaluation with operator short-circuiting. (http://en.wikipedia.org/wiki/Short-circuit_evaluation http://en.wikipedia.org/wiki/Short-circuit_evaluation)