in reply to Base sequence length in fasta format file

Perhaps you could explain what a "base" is?
The code makes little sense... 
my $base = ("A"|"C"|"G"|"T"); # what is this? $base is now 'W'
#...
foreach $base ($sequence){  # $sequence is a scalar, not an array
#...
}

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--perlplexer

In Section Seekers of Perl Wisdom