Hi,
since a week, i'm studying the perlretut. I'm confused with an example:
while ($dna =~ /(\w\w\w)*?TGA/g) { # note the minimal *?
print "Got a TGA stop codon at position ", pos $dna, "\n";
}
which prints
Got a TGA stop codon at position 18
Got a TGA stop codon at position 23
On the regexp: /(\w\w\w)*?TGA/g
can anybody explain me step by step the procedure that the regexp engine does with the provided string?
$dna = "ATCGTTGAATGCAAATGACATGAC"
EDIT:
I was missing the fact that *? matches the empty string too, so even if at the start of the line a TGA is going to be counted. However i still don't understand why this is bugged without \G.
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