Jim, I certainly am not deprecating the use of RegEx - it clearly is
just as powerful as you say. My point was the 'exponentially slower'
on long strings - if one is going to write a function to be called
many times, or applied to arbitrarily long strings, the more lines of
code approach may be more appropriate. As you say, 'in the right place'.
Best,
Mark
On 11 Jul 2006, at 01:00, Jim Ault wrote:
The use of RegEx is very powerful in the right place. The basic
idea is
that the PCRE engine will travel through a block of text applying
rules
rather than simply doing character comparisons.
Short strings are fast and longer ones exponentially slower. The
reason for
this is usually that RegEx is a way of looking at patterns and
character
types/classes rather than specific characters.
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