in reply to A refactoring trap

You don't have to use /[#]/x, you can use /\#/x just as well; just like you more or less have to use /\ /x in order to be able to match a space.

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Re^2: A refactoring trap
by Anonymous Monk on Aug 17, 2005 at 11:57 UTC
    /[ ]/x matches a space as well.
[reply]
[d/l]
      But the regular expression engine is more likely to be able to optimize a literal character as opposed to a character class.
[reply]
        That's true. Pity noone has written an optimizer-optimizer which translates one character character classes to literal characters.
[reply]

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