Hi, I have a hash with keys of the format
sar0011_4
sar0203_3
sar0050_5
sar2001_1
sar0002_9
And I would like to generate a list ordered by the \d\d\d\d bit in the
middle. I have this from the perl cookbook
my @keys = sort {criterion()} keys(%gene_pool);
but I don't really know how to approach the criterion() function
Anybody have any suggestions?
Thanks for any help
Adam
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