My personal recommendations would be
s///, or
substr on the left hand side of an assignment, or the 4 argument
substr. A demo of each:
($chopped) = $s =~ s/^(.)//s;
# or
$s =~ s/^.//s;
substr($s, 0, 1) = ""; # no way to get the value back, though...
# Note: you need the parens. Precedence of the assigment is higher tha
+n that of the comma.
$chopped = substr $s, 0, 1, "";
# or
substr $s, 0, 1, "";
Why? I think these must be quite fast, and simple enough. I doubt
reverse is that fast, especially on long strings.
You can always use substr as a function, but I'd only do that if I need to keep the original value of the scalar, and get a modified copy.
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