raimon
1
Hello,
I’m playing for my very first time with Regex …
I want to split some numbers, and get their results:
Given this string:
18,04 2,89 20,93 2,71 18,22
I want to get every number before a comma, and two digits later, and all
the groups.
I think it should work this way but I can only get the first result …
/(\d+,\d{2})/ =~ “18,04 2,89 20,93 2,71 18,22”
=> 0
$1
=> “18,04”
$2
=> nil
$3
=> nil
$4
=> nil
$5
=> nil
Playing with the http://www.rubular.com/ I can get the result that I
want …
I also tried the Regexp.last_match but I’m getting the same, only the
first value …
what I’m doing wrong ?
thanks!
r.
raimon
2
On 06.04.2009 19:12, Raimon Fs wrote:
$2
want …
I also tried the Regexp.last_match but I’m getting the same, only the
first value …
what I’m doing wrong ?
You do not use String#scan. 
Btw, you do not need the grouping as you want the complete match anyway.
Kind regards
robert
raimon
3
Robert K. wrote:
On 06.04.2009 19:12, Raimon Fs wrote:
$2
want …
I also tried the Regexp.last_match but I’m getting the same, only the
first value …
what I’m doing wrong ?
You do not use String#scan.
=> var=“18,04 2,89 20,93 2,71 18,22”
a=var.scan(/\d+,\d{2}/)
=> [“18,04”, “2,89”, “20,93”, “2,71”, “18,22”]
a[0]
=> “18,04”
a[1]
=> “2,89”
a[2]
=> “20,93”
a[3]
=> “2,71”
a[4]
=> “18,22”
thanks …
Btw, you do not need the grouping as you want the complete match anyway.
I was grouping with () because I was using:
line =~
%r{(\d+,\d{2})(\s)(\d+,\d{2})(\s)(\d+,\d{2})(\s)(\d+,\d{2})(\s)(\d+,\d{2})}
and then $1, $2, $3, $4, …
thanks for your help!
regards,
r.