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Answer: How can I strip an arbitary number of leading spaces from a string?

by japhy (Canon)
on Sep 25, 2000 at 21:04 UTC ( #33931=categorized answer: print w/replies, xml ) Need Help??

Q&A > strings > How can I strip an arbitary number of leading spaces from a string? - Answer contributed by japhy

There is no need to use s/^\s*//. This will waste time on strings with no leading space. Use s/^\s+// at all times -- it obviously won't do anything if there's no whitespace to match.

A general rule of thumb is that s/X*// is slower than s/X+//, and in cases where the RHS (right-hand side) is something OTHER than "", chances are you really do mean X+.

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