I am trying to use a regex to find text inside a string. For example, have this string:
one,two,three,four
If I want to see if it has one OR two, I can use "one|two". How do I create a regex for determining whether the string has one AND two?
+7
A:
^(?=.*\bone\b)(?=.*\btwo\b)
= two lookahead assertions that match if both "one" and "two" are present in the string.
Tim Pietzcker
2010-01-19 18:48:51
Nice, wouldn't of thought to use lookaheads for that... I would add a `\b` around `one` and `two` to ensure that `onetwo` isn't matched...
gnarf
2010-01-19 18:50:47
+1, it would also be useful to add `^` in the beginning to avoid extra work in case of no-match
Antony Hatchkins
2010-01-19 18:56:00
excellent idea, thanks!
Tim Pietzcker
2010-01-19 18:56:07