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RegEx Positive Look Ahead
hjanum
Posts: 110 ✭✭
I was trying to look for three words in random order. Normally this is done with a RegEx Positive Lookahead.
Example: (?=.*\bONE\b)(?=.*\bTWO\b)(?=.*\bTHREE\b)
I tried this in a Grooper extractor, but it did not return any results. Is there a trick to doing this?
Example: (?=.*\bONE\b)(?=.*\bTWO\b)(?=.*\bTHREE\b)
I tried this in a Grooper extractor, but it did not return any results. Is there a trick to doing this?
0
Answers
Example: ONE|TWO|THREE
I've had the most success that way.
I assume that you mean something along the lines of:
Unfortunately, this does not have the same semantic meaning.
The string "ONE ONE ONE" would match, whereas it would not match the positive lookahead extraction.
I suppose you could do something along the lines of:
Then add the N! permutations of the expression under a parent extractor. In this case N=3, so there are only 6 permutations. This is probably doable, but if we are looking for five words N=5, then there are 120 permutations.