metaperl.com wrote:
Pyparsing has a really nice feature that I want in PLY. I want to
specify a list of strings and have them converted to a regular
expression.
A Perl module which does an aggressively optimizing job of this is
Regexp::List -
http://search.cpan.org/~dankogai/Regexp-Optimizer-0.15/lib/Regexp/List.pm
I really dont care if the expression is optimal. So the goal is
something like:
vowel_regexp = oneOf("a aa i ii u uu".split()) # yielding r'(aa|a|uu|
u|ii|i)'
Is there a public module available for this purpose?
Perhaps I'm missing something but your function call oneOf(...) is longer than
than actually specifying the result.
You can certainly write quite easily:
def oneOf(s):
return "|".join(s.split())
-Larry
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