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Perl: the Markov chain saw

Re^3: Help Extract these lines

by Laurent_R (Canon)
on Jun 17, 2013 at 22:25 UTC ( #1039480=note: print w/replies, xml ) Need Help??

in reply to Re^2: Help Extract these lines
in thread Help Extract these lines

Alright, I just typed an approach for a solution directly on the web page, not having access to a Perl compiler when I did it (and I said that I could not test). What I typed does not compile, but it takes less than 5 seconds to find out why and to correct it. One really easy to find compile error (adding parens after the while keyword) and one other small stupid mistake just as easy to find and to correct, and it basically works:

use Data::Dumper; my %my_hash; my $id; while (<DATA>) { chomp; s/\r//g; $id = (split /:/, $_)[1] if /id/; if (/name/) { my $name = $1 if /\: "(\w+)"/; $my_hash{$name} = $id; } } print Dumper \%my_hash; __DATA__ "id": "xx-ada-qwebasd", "name": "telphone", "id": "fasda-asd-123123-fkja123a", "name": "car", "id": "97f921-a312-fas2", "name": "ball",
which prints:
$ perl $VAR1 = { 'ball' => ' "97f921-a312-fas2",', 'car' => ' "fasda-asd-123123-fkja123a",', 'telphone' => ' "xx-ada-qwebasd",' };
I admit the data still needs a bit more cleaning, but that's really boilerplate code, and I think that this untested code basically gave a very good track towards the solution.

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