Re^2: Sorting text files.

Yeah, why sort when you don't have to :)

#!/usr/bin/perl

# http://perlmonks.org/?node_id=1147112

use Inline::Files;
use strict;
use warnings;

my %id;

$id{ s/;.*//sr } .= $_ while <FILE1>;
print delete @id{ map s/\n//r, <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
[download]

Comment on Re^2: Sorting text files. Download Code

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Re^3: Sorting text files. by BrowserUk (Patriarch) on Nov 06, 2015 at 21:34 UTC
What happens if there are duplicate keys? With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". I knew I was on the right track :) In the absence of evidence, opinion is indistinguishable from prejudice.	[reply]
Re^4: Sorting text files. by Anonymous Monk on Nov 06, 2015 at 21:46 UTC
That's why the .= is there :)	[reply]
Re^5: Sorting text files. by BrowserUk (Patriarch) on Nov 07, 2015 at 00:03 UTC
Cool. (But within the duplicate records no ordering is done. Which might be what the OP wants.)	[reply]
Re^6: Sorting text files. by Anonymous Monk on Nov 07, 2015 at 00:28 UTC
Re^7: Sorting text files. by Saner (Novice) on Nov 07, 2015 at 10:50 UTC
Some notes below your chosen depth have not been shown here
Re^7: Sorting text files. by BrowserUk (Patriarch) on Nov 07, 2015 at 00:34 UTC