Robert Klemme
1/19/2009 9:52:00 PM
On 19.01.2009 21:45, Mmcolli00 Mom wrote:
> File.open("patientrecords.txt", 'r') do |p|
> if p.gets =~ /%{2,3}PersonID/ then
> puts "PersonID exist twice"
That output would be wrong, even if your matching would work the way you
want it to.
> end
> end
>
> This is supposed to tell me if there a line in my text file that
> contains 'PersonID' at least 2 times and at most 3 times.
It won't work. {m,n} needs to be placed *after* the bit you want to
repeat. Also, it will match only immediate repetition unless you take
measures to avoid that.
Having said that using scan(/PersonID/).size is probably simpler...
> I have been
> playing with regular expressions and thinking {m,n} would help with
> this. This snippet is used to show me if it will actually work. (Some
> lines contain PersonID only once, I do not want to use those lines)
I can't seem to find a question in your posting...
Cheers
robert
--
remember.guy do |as, often| as.you_can - without end