extract numbers from string in ruby regex

Question

I have a string as

Teen Mom 2 (Season 5) | Ep. 7 | These Are The Days | MTV

I need to extract only Season number and Episode number from this. ie. 5 and 7.

Please help.

Avinash Raj · Accepted Answer · 2014-12-01 08:29:32Z

5

Use string.scan function like below.

> "Teen Mom 2 (Season 5) | Ep. 7 | These Are The Days | MTV".scan(/(?<=Season )\d+|(?<=Ep\. )\d+/)
=> ["5", "7"]

(?<=Season ) Positive look-behind asserts that the match must be preceded by Season string.
\d+ Match one or more digits.

edited Dec 1, 2014 at 8:29

answered Dec 1, 2014 at 8:23

Avinash Raj

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2 Comments

Avinash Raj Over a year ago

or (?:Season|Ep\.)\s+\K\d+

Cary Swoveland Over a year ago

Good answer, great \Komment.

Uri Agassi · Accepted Answer · 2014-12-01 08:31:22Z

1

Here is a method which generates a named match:

txt = "Teen Mom 2 (Season 5) | Ep. 7 | These Are The Days | MTV"
match = /Season (?<season>\d+).*Ep\. (?<ep>\d+)/.match txt

match['season']
# => 5
match['ep']
# => 7

answered Dec 1, 2014 at 8:31

Uri Agassi

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