It seems likely (without benchmarking) that those two substitutions (s/^\s.*//; s/\s.*$//;) are very efficient at removing leading and trailing white space. However the side effect of removing everything if there is leading or trailing white space may be too much of a price to pay for "efficiency"!

True laziness is hard work

In reply to Re^2: trimming space from both sides of a string by GrandFather
in thread trimming space from both sides of a string by szabgab

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