On Monday, March 18, 2013 8:59:27 PM UTC+1, Andy Fingerhut wrote:
>
> str is based on the toString() method of java.util.regex.Pattern, so I do
> not understand why you say it only works if you build up from parts that
> are literal regexes. For example:
>
> user=> (def r1 (re-pattern "\\sfoo|bar\\d+"))
> #'user/r1
> user=> (def r2 (re-pattern "taking over the world( world)*\\b"))
> #'user/r2
> user=> (def r3 (re-pattern (str "(" r1 ")|(" r2 ")")))
> #'user/r3
> user=> r3
>
Well obviously, you aren't benefiting from the literal regex syntax here :)
Stefan's point was using the literal syntax to avoid double-backslashes and
such, while still programmatically building up the full regex.
-marko
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