Ludwig von Drake :
I am trying to create a Regex pattern for <String>-<String>. This is my current pattern:
(\w+\-\w+).
The first String is not allowed to be "W". However, it can still contain "W"s if it's more than one letter long.
For example: W-80 -> invalid W42-80 -> valid
How can this be achieved?
vbezhenar :
So your first string can be either: one character but not W or 2+ characters. Simple pattern to achieve that is:
([^W]|\w{2,})-\w+
But this pattern is not entirely correct, because now it allows any character for first part, but originally only \w characters were expected to be allowed. So correct pattern is:
([\w&&[^W]]|\w{2,})-\w+
Pattern [\w&&[^W]] means any character from \w character class except W character.