Thanks for the compare script. Indeed the lexical is a bit faster (probably what tobyink said about internal optimisations) and is confirmed by choroba but when I declare a lexical variable inside the loop for my $x (1,2,3) {my $z=12; $y+=$x } in predecl, it's 50% slower :(

I keep what you said about optimisation is a science

In reply to Re^2: declaring lexical variables in shortest scope: performance? by bliako
in thread declaring lexical variables in shortest scope: performance? by bliako

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