schott19
asked on
Easy regex for someone who knows how to do them!
I have the following input , pattern and replacement:
input = "/suo/west_midlands/birmin
pattern = "/suo/(\w+)/(\w+).aspx?"
replacement = "$1|$2"
when i run the match i get:
"west_midlands|birmingham?
which is correct but when i change the underscore to be a dash it does not work!
as what i really want is a match for :
"/suo/west-midlands/birmin
Can anyone spot what im missing and if so, could you explain why the pattern i currently have does not work for - but does for _ and also what is the correct pattern.
Thanks in advance
Dave
input = "/suo/west_midlands/birmin
pattern = "/suo/(\w+)/(\w+).aspx?"
replacement = "$1|$2"
when i run the match i get:
"west_midlands|birmingham?
which is correct but when i change the underscore to be a dash it does not work!
as what i really want is a match for :
"/suo/west-midlands/birmin
Can anyone spot what im missing and if so, could you explain why the pattern i currently have does not work for - but does for _ and also what is the correct pattern.
Thanks in advance
Dave
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thanks for your help,
Works a treat now... i was almost there but i forgot the + after the [ ]
Works a treat now... i was almost there but i forgot the + after the [ ]
Not a problem, glad I was able to help. ;=)
The reason why the pattern you are using is not giving you the results you want is because the \w meta-character has the following meaning:
Match any of the following character, a-z, A-Z, _, and 0-9.
Therefore the character, -, is not a member of the set and is not a match. This is the reason why I replaced the \w with [a-zA-Z_\-0-9]. Also note that the - is escaped in the pattern because when it appears inside [ ] it is a range meta-character.
Fernando