Re: change [A-Z] to U, [a-z] to L with one regex?

You can always use $_:

$_ = "SomEThingWithMIXEDRegiSter\n";

y/A-Z/U/, y/a-z/L/;

print;
[download]

Yes, this is technically still two expressions, but as others have stated, it'll be efficient, and to me, anyway, the comma operator has good semantic meaning, here, even though a semicolon would do just as well.

Update: Corrected bracket typo in y///. Thanks jwkrahn.

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Re^2: change [A-Z] to U, [a-z] to L with one regex? by jwkrahn (Abbot) on Mar 20, 2013 at 05:32 UTC
`y/[A-Z]/U/, y/[a-z]/L/;` [download] Doctrin didn't ask to change the characters `[` or `]` to `U` or `L` `y/A-Z/U/, y/a-z/L/;` [download]	[reply] [d/l] [select]