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Re^3: Sorting text files.

by BrowserUk (Patriarch)
on Nov 06, 2015 at 21:34 UTC ( [id://1147136]=note: print w/replies, xml ) Need Help??


in reply to Re^2: Sorting text files.
in thread Sorting text files.

What happens if there are duplicate keys?


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Re^4: Sorting text files.
by Anonymous Monk on Nov 06, 2015 at 21:46 UTC

    That's why the .= is there :)

      Cool. (But within the duplicate records no ordering is done. Which might be what the OP wants.)

        Well, the OP didn't ask for that, but if he wants it, (and this is one of the reasons I love perl) it's an easy fix :)

        #!/usr/bin/perl # http://perlmonks.org/?node_id=1147112 use Inline::Files; use strict; use warnings; my %id; $id{ s/;.*//r } .= $_ for sort <FILE1>; print delete @id{ <FILE2> }, values %id; __FILE1__ 1 HD;BSkyB:11097:VC23M5O25P0S1:S28.2E:23000:2305=27:2307=NAR@4;2306=en +g@106:2308;2309=eng:0:21000:2:2066:0 2 HD;BSkyB:11097:VC23M5O25P0S1:S28.2E:23000:2315=27:2316=NAR@4;2317=en +g@106:2318;2319=eng:0:21020:2:2066:0 3 HD;BSkyB:11097:VC23M5O25P0S1:S28.2E:23000:2320=27:2321=NAR@4;2322=en +g@106:2323;2324=eng:0:21030:2:2066:0 ITV HD;BSkyB:11097:VC23M5O25P0S1:S28.2E:23000:2305=27:2307=NAR@4;2306= +eng@106:2308;2309=eng:0:21000:2:2066:0 __FILE2__ 3 HD 1 HD 2 HD

        (with another simplification thrown in)

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