Re: Using grep in a scalar context

[choroba]

in reply to Using grep in a scalar context

Works for me:

perl -E '@dipept = qw/XX AA BB CC DDAAD AAAAAAA/; $FMat[0][0] = grep(/
+AA/, @dipept); say $FMat[0][0]'
3

The documentation of grep clearly states:

In scalar context, returns the number of times the expression was true.

What input do you have? What output do you expect?

[newbie1991]

My input is a string of amino acid bases, essentially it looks like MHDLKNDHASDRWT and I am counting pair occurrences throughout. MH HD DL LK KN ND are all accepted and should be counted.