Beefy Boxes and Bandwidth Generously Provided by pair Networks
Think about Loose Coupling

Re: remove entries with duplicate characters

by Laurent_R (Canon)
on Jul 31, 2019 at 20:51 UTC ( #11103669=note: print w/replies, xml ) Need Help??

in reply to remove entries with duplicate characters

In general terms, the usual way to remove duplicates (which is what you're trying to do for a certain definition of duplicates) is to read sequentially your input data records and to store the values of interest (in your example the GN "TUFA" value) that you've already seen in a hash (as a hash key). Then, if the GN value has already been seen, just don't consider the entry. Else write it to output.

For example, something along these lines (untested):

my %seen; while (my $line = <$IN>) { my $gn = $1 if $line =~ / GN=(\w+) /; next if exists $seen{$1}; $seen{$1} = 1; print $line; }
That's just the general idea. Details may vary according to the circumstances.

Otherwise, if that doesn't help, I agree with 1nickt: please show the code that you have, it will be much easier to help you.

Log In?

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://11103669]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others imbibing at the Monastery: (2)
As of 2023-03-31 02:20 GMT
Find Nodes?
    Voting Booth?
    Which type of climate do you prefer to live in?

    Results (74 votes). Check out past polls.