Ah, yes, I didn't realize that originally the OP didn't use
<code> tags, so I didn't notice the space.
My second point still stands though, tr/// is
usually faster than s///. It is faster because
tr/// is a much simpler operation. It's a character by character replacement - no copy of the string
needs to be made, nor do large parts of the string be moved.
An s/// operation cannot assume such a thing,
replacement parts can be shorter or smaller than the thing
that needs to be replaced.
Abigail
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