How do I get the second integer in a Ruby string with to_i?

Question

I need to convert some strings, and pull out the two first integers e.g:

unkowntext60moreunknowntext25something

To:

@width = 60
@height = 25

If I do string.to_i, I get the first integer:, 60. I can't figure out how I get the second integer, 25. Any ideas?

molf · Accepted Answer · 2009-06-29T20:37:15.130

12

How about something like:

text = "unkowntext60moreunknowntext25something"
@width, @height = text.scan(/\d+/).map { |n| n.to_i }  #=> 60, 25

edited Jun 29 '09 at 20:37

answered Jun 29 '09 at 20:24

molf

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score 4 · Answer 2 · answered Jun 29 '09 at 20:23

4

@width, @height = "unkowntext60moreunknowntext25something".scan(/[0-9]+/)

answered Jun 29 '09 at 20:23

Simone Carletti

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this returns strings, not integers – Mario Menger Jun 29 '09 at 20:40
That's true, you can easily cast them to int using to_i but something it's just fine to keep them as string (if the receiver doesn't need to get integers or it casts them again to string. this is a common case if you use @width and @height in a Rals helper). – Simone Carletti Jun 29 '09 at 20:47

score 2 · Answer 3 · answered Jun 29 '09 at 20:22

You can use a regular expression like (\d+) to capture all numbers in the string and then iterate the capture groups converting each one to an integer.

Edit: I don't know Ruby so I've wiki'd this answer in hopes that a Rubyist would flesh out a code example.

How do I get the second integer in a Ruby string with to_i?

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