It would be sad if Perl 6 were not free to optimize
 my $x = $z * ( $y + 1 ) + $w / ( $y + 1 );

Why would defining execution order affect that optimisation?

That just common subexpression elimination--clearly defined by the parens. The only sane defined ordering would be to execute the contents of parens first?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco.
Rule 1 has a caveat! -- Who broke the cabal?

In reply to Re^3: Why is the execution order of subexpressions undefined? (victim) by BrowserUk
in thread Why is the execution order of subexpressions undefined? by BrowserUk

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