For the first one, would engines like v8 be smart enough to optimize it so it isn't wasting time on a pointless if-branch? (I'd imagine not, as it would be pre

For the first one, would engines like v8 be smart enough to optimize it so it isn't wasting time on a pointless if-branch? (I'd imagine not, as it would be pretty hard for the engine to know that all the record.bool's are booleans.)