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All the Perl that's Practical to Extract and Report

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Debugging In List Context 4 Comments More | Login | Reply /

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  • #!/usr/bin/perl

    use strict;
    use warnings;

    my @a = (
                    1,
                    @{[map {()} warn "in here\n"]},
                    2,
                    3
    );

    print map { "$_\n" } @a;

    • or the slightly less stupid (I don't know why I threw it in an arrayref to start with):

      #!/usr/bin/perl

      use strict;
      use warnings;

      my @a = (
                      1,
                      (map {()} warn "in here\n"),
                      2,
                      3
      );

      print map { "$_\n" } @a;

      • An even shorter way to write that is this:

        (map {;} warn "in here\n")

        However, I prefer to take a page from Javascript, by defining the following amusing function:

        sub void {}

        I can then write the code in this much nicer way:

        (void warn "in here\n")

        This is far nicer than Ovid’s approach as well, IMO.

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