It is possible to use split for this, but the only solution I know of requires a filtering through grep:

@codons = grep $_, split /(.{3})/, 'atgactaatagcagtgg';

As demerphq pointed out, unpack is a better way to achieve this. But if you're going to use split, note that that grep condition is wrong. In particular if the last character is a zero and it should be in an an element of its own then it will get omitted:

my @codons = grep $_, split /(.{3})/, 'atgactaatagcagt0';

Explicitly testing for the empty string is required:

my @codons = grep { $_ ne '' } split /(.{3})/, 'atgactaatagcagt0';


In reply to Re: Puzzlement in Splitsville by Smylers
in thread Puzzlement in Splitsville by tlm

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