Avoid copying all of the lhs into @args #5
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lizmat
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lizmat
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This is basically just to get it out there and may be revoked at any time before the next release. It basically creates a copy of Array with aliases to the values: my @A = ^10; my @b = @a.cow; # values are shared @b[5] = 42; # element #5 no longer shared This as a result of a question at The Perl Conference: Can you do "Copy-On-Write" in Perl 6? I thought this could be useful.
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We only need $arity elements from the end of the @lhs so we just copy those into @Args (ignoring the last element if it ~~ Code)