Hi,

This question might have been asked a million times, but here it is.

I want a regex to fail if there is:

1. A character not in the set

2. A character twice in the set

f.e.
The list of characters 'ABCDEF', than it should return false if.
ABDA
ABXD
AABB

But true if
ABC
A
DEFA

I now worked around with a map or grep, but I think it should be doable in a single regex. The sequence of characters doesn't matter

Thanks for your help
---------------------------
Dr. Mark Ceulemans
Senior Consultant
IT Masters, Belgium

In reply to regex maching unique character set by mce

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