Ruby: How to select and copy a portion of string within an array?

Question

Forgive me, I'm new!

I'm trying to select and copy a portion of a string from within an array; specifically, someone's last name.

array = ["Buffy Summers", "Willow Rosenberg", "Xander Harris", "Cordelia Chase", "Rupert Giles"]

I need to isolate and copy "Summers", "Rosenberg", "Harris", "Chase", and "Giles". Basically, I want to select everything after the space character through the end of the string.

I've seen this example:

"truncate".gsub(/a.*/, '')
=> "trunc"

but this selects everything before the "a", while I need to select everything after a space character. Also, this is not within an array.

maicher · Accepted Answer · 2016-07-31 19:41:05Z

4

These piece of code will do the trick:

surnames = array.map { |item| item.split(' ').last }

edited Jul 31, 2016 at 19:41

answered Jul 31, 2016 at 19:36

maicher

2,7652 gold badges21 silver badges27 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

maicher Over a year ago

Yes, unless you're sure, that global vairiable $; has it's default value. ruby-doc.org/core-2.2.0/String.html#method-i-split

Sagar Pandya · Accepted Answer · 2016-08-02 05:50:44Z

-1

Implementing something similar to your suggestion, we have:

array.map { |s| s.gsub(/\w+\s+/,'') }                                       
#=> ["Summers", "Rosenberg", "Harris", "Chase", "Giles"]

or

array.map {|s| s.match(/\w+\z/).to_s }
#=> ["Summers", "Rosenberg", "Harris", "Chase", "Giles"]

edited Aug 2, 2016 at 5:50

answered Jul 31, 2016 at 19:57

Sagar Pandya

9,5282 gold badges28 silver badges38 bronze badges

Collectives™ on Stack Overflow

Ruby: How to select and copy a portion of string within an array?

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related