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Re: List::MoreUtils before, after and ... between?

by LanX (Chancellor)
on Feb 21, 2012 at 16:15 UTC ( #955343=note: print w/replies, xml ) Need Help??

in reply to List::MoreUtils before, after and ... between?

Not sure if I understand your problem completely, why not simply combining grep and flip-flop?

This should be close:

DB<134> @list= ("a".."c","DBIC","A".."C","DANCER","a".."c") => ("a", "b", "c", "DBIC", "A", "B", "C", "DANCER", "a", "b", "c") DB<135> grep { /DBIC/.. /DANCER/ } @list => ("DBIC", "A", "B", "C", "DANCER")

Cheers Rolf

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Re^2: List::MoreUtils before, after and ... between?
by ikegami (Pope) on Feb 21, 2012 at 23:20 UTC
    That's not the requested output.
      ...This should be close..


      Still not sure what the requested output is, but if it's only about eliminating the edges try

      DB<101> @list= ("a".."c","DBIC","A".."C","DANCER","a".."c") => ("a", "b", "c", "DBIC", "A", "B", "C", "DANCER", "a", "b", "c") DB<102> grep { /DBIC/ .. /DANCER/ and ! /DBIC/ and ! /DANCER/ } @lis +t => ("A", "B", "C")

      not DRY but effective.

        That looks very readable and produces the output I said I need, but not for some of the edge cases that other monks thought of:
        say for grep { /DBIC/ .. /Dancer/ and !/DBIC/ and !/Dancer/ } qw<eval +DBIC::3 eval DBIC::2 DBIC::1 MyApp::3 MyApp::2 MyApp::1 Dancer::3 Dan +cer::2 Dancer::1>;
        say for grep { /DBIC/ .. /Dancer/ and !/DBIC/ and !/Dancer/ } qw<MyApp +::3 MyApp::2 MyApp::1 Dancer::3 Dancer::2 Dancer::1>;
        I hadn't thought of these edge cases when I posted, but the first one is a distinct possibility. The example code with reverse before works ok for these.

        Thanks for showing me a new way of using the flip-flop.

        - Boldra

        The code is not even close to what it should be, and it's totally irrelevant if it's simply the output that is close to what it should be.

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