Regex Question

  • Thread starter Thread starter JM
  • Start date Start date
J

JM

Hi,

I am not sure if this is the place to post a REGEX question if not, please
indicate me where i can post it?.

My question:
Given a string like: "Boston. MA. Holidays" I need to define the regular
expression to find each dot, the previous word and the word after. That is i
want to obtain:

first match: "Boston" "." "MA"
second match: "MA" "." "Holidays"

The problem is that if I use somthing like: ([^\s\.]+)(\.)(\s*[^\s\.]+) I
"cosume" MA in the first macth so I do not have a second match. That is I
obtained:

first match: "Boston" "." "MA"
and no more matches, since MA is consumed in the previous match.

Any help??

Thanks,
jaime
 
JM said:
Given a string like: "Boston. MA. Holidays" I need to define the regular
expression to find each dot, the previous word and the word after. That is i
want to obtain:

first match: "Boston" "." "MA"
second match: "MA" "." "Holidays"

The problem is that if I use somthing like: ([^\s\.]+)(\.)(\s*[^\s\.]+) I
"cosume" MA in the first macth so I do not have a second match. That is I
obtained:

first match: "Boston" "." "MA"
and no more matches, since MA is consumed in the previous match.
Click to expand...

One solution is to use the Match overload that takes a search start
offset - Regex.Match (String, Int32) - for your second (and
subsequent) matches. If your second Match operation starts at the "MA"
substring's offset, it won't matter that "MA" was consumed by the
first Match.
 
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