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Re: printing every 2nd entry in a list backwards

by Anonymous Monk
on May 19, 2017 at 16:02 UTC ( #1190646=note: print w/replies, xml ) Need Help??


in reply to printing every 2nd entry in a list backwards

What would a Perl6 idiomatic (and fast) solution look like?
  • Comment on Re: printing every 2nd entry in a list backwards

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Re^2: [P6] printing every 2nd entry in a list backwards
by Laurent_R (Canon) on May 19, 2017 at 17:54 UTC
    I don't have time now to test how fast it is, but these are two idiomatic ways of doing in Perl 6, both using a pointy block with two loop variables (only one of which is actually used).

    With the range operator and reverse:

    for (1..10).reverse -> $x, $y { say $y}
    And using the sequence operator which can build a reversed list:
    for 10...1 -> $x, $y {say $y }

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