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Thanks, synapse0 (and others who replied also) for the suggestions.   8^)

I'm not familiar with the eq 'lc' ? lc() : uc(); syntax from print OUT $uclc eq 'lc' ? lc() : uc();.   Would you be so kind as to explain how that works?

Updated: 2001-07-29 07:40 CDT

Here's what I ended up using.   Thanks again, and ++ to all who offered suggestions in nodes and CB!
    cheers,
    Don
    striving toward Perl Adept
    (it's pronounced "why-bick")

#!/usr/bin/perl -w use strict; my $uclc = shift or Usage(); Usage() unless ($uclc eq 'uc' or 'lc'); while(<>) { print $uclc eq 'uc' ? uc() : lc(); } sub Usage { print "\n Usage: uclc.pl (uc|lc) < infile > outfile\n\n"; exit; } =head1 NAME uclc.pl =head1 SYNOPSIS uclc.pl (uc|lc) < infile > outfile" Convert alpha characters in text file to uppercase (or lowercase). =head1 UPDATED 2001-07-26 16:30 CDT Simplify code for (in|out)put of STD(IN|OUT). Remove unnecessary "or Usage()" from first two input lines. Replace if/else with ternary "?:". my $munged; if ($uclc eq 'uc') { $munged = uc(); } else {$munged = lc(); } print OUT $munged; While instead of for so file read line-by-line not slurp entire fil +e. Post efficiency SoPW to PerlMonks 2001-07-25 Initial working code. =head1 TODOS None that I know of. =head1 TESTED ActivePerl 5.61 on Win2kPro =head1 AUTHOR ybiC =head1 CREDITS Thanks to synapse0, OeufMayo, crazyinsomniac, Masem, MZSanford, virtualsue, Hoffmater, tilly, clemburg, and ichimunki for suggestions. And to davorg for "Data Munging with Perl". Oh yeah, and to some guy named vroom. =cut

In reply to (code) Re: (2) More efficient munging... (improved lc() uc() snippet) by ybiC
in thread More efficient munging if infile very large by ybiC

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    [Corion]: ambrus: Oh - that one would be much harder to automate... The SYNOPSIS section should mostly be a runnable program IMO, but I write only small snippets in my documentation for single functions/methods, and creating the appropriate environment for ...
    [Corion]: ... those in an automated fashion seems somewhat hard to me. Although it should do wonders for the test coverage ;)
    [haukex]: Corion: I once wrote an automated thingy for that here
    [haukex]: here's the code that uses it
    [Corion]: haukex: Hmm - maybe I can reuse that. I see that it uses Pod::Parser, which I think was one of the more fragile parsers. But if I'm statically (re)generating the tests instead of doing that "live" on the client/tester machines, that's a much smaller...
    [Corion]: ... problem space than trying to cater to all versions of Pod::Parser(s)
    [haukex]: I think you're right, I think Pod::Simple is the preferred parser now
    [haukex]: But I was just using it as an author test anyway

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