go to specific char in a file

[Rudy Rusli]

Hi

I am looking for a way to get to a specific character in a file.
Let's say i have the following lines in a file

ABC12AX3456XYZ
ABC123HGNasdfg

How do I ask ruby to grab character 3-8 on each line and display them on
the screen?

I would really appreciate if someone could show it by using regular
expressions.

thanks

tabing16

 

[Stefano Crocco]

Alle Friday 18 January 2008, Rudy Rusli ha scritto:

Hi

I am looking for a way to get to a specific character in a file.
Let's say i have the following lines in a file

ABC12AX3456XYZ
ABC123HGNasdfg

How do I ask ruby to grab character 3-8 on each line and display them on
the screen?

I would really appreciate if someone could show it by using regular
expressions.

thanks

tabing16

Using a regexp is not the clearer way to do it, in my opinion. However, you
can do:

line.match(/^.{3}(.{6})/
puts $1

The simpler way is:

puts line[3..8]

(I assume that you're counting characters starting from 0).

Stefano

 

[Rudy Rusli]

Using a regexp is not the clearer way to do it, in my opinion. However,
you
can do:

line.match(/^.{3}(.{6})/
puts $1

The simpler way is:

puts line[3..8]

(I assume that you're counting characters starting from 0).

Stefano

Hi Stefano

thanks for the speedy reply and solving it
I did try the second method.
I was just wondering if there's anyway to tackle it by using reg ex

cheers

tabing16

 

[Lee Jarvis]

I was just wondering if there's anyway to tackle it by using reg ex

Something like..

File.foreach('file') {|line| puts line.match(/^.{3}(.{5})/)[1] }

12AX3
123HG

?

Regards,
Lee