Of course it does. I'm guessing you called it in scalar context and got the count of the transform; e.g., 1.

print revcompl("CGTAGTC"), $/;
# GACTACG
print scalar revcompl("CGTAGTC"), $/;
# 1

[download]

There was just a post on this issue this morning: Mini-Tutorial: Scalar vs List Assignment Operator.

In reply to Re^4: DNA Reverse Complement by Your Mother
in thread DNA Reverse Complement by mousey

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