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Re: whats the best way to query/extract fields from a tab delimited file

by reclaw (Curate)
on Oct 31, 2003 at 20:25 UTC ( #303699=note: print w/replies, xml ) Need Help??


in reply to whats the best way to query/extract fields from a tab delimited file

You could also try using AnyData

use AnyData; my $table = adTie('Tab', 'file.tsv', 'r'); # Get all column Names my @col_names = adNames($table); # or get all values in a column my @col_vals = adColumn($table, 'column_name'); # or get a column value from a row print $table->{row_name}->{column_name}; # or search all rows for a value while (my $row = each %$table) { print $row->{column_name} if $row->{row_name} eq 'this'; } undef $table;

Reclaw

Your mileage may very.

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[marinersk]: sub newtest{my $expected_result = &target('foo'); my $actual_result = &target('foo'); if ($actual_result eq $expected_result) { &tdd_success(); } else { &tdd_fail(); } } # Test works after three years!
[choroba]: or nobody bothered...
[choroba]: The problem was bigger, as the test tried to call a method that didn't exist anymore
[marinersk]: :: ducking ::
[choroba]: because, someone renamed the method, but didn't notice it was used in the test, as the test was skipped
[marinersk]: Well, if the method doesn't exist, it would be hard to pass the test.
[choroba]: later, someone removed the new method, as all its usage places were safe, but didn't notice the test still used the old name
[choroba]: fortunately, it wasn't that hard to replace the method and fix a few remaining failures due to the changes we did to the codebase over the years
[marinersk]: choroba Sounds like a process improvement opportunity; tests may not all need to be run, but they should all be compiled with perl -c before check-in/promotion happens.
[choroba]: so, now I have the test, so I can start making changes in the code. Back to the original ticket, yay!

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