CODEWITHSUNDEEP
rubyregex
Luis Armando
Luis Armando

Reputation: 454

Ruby Regex to eliminate non word characters

Hello I would like to eliminate non words characters by a Regex in Ruby.

Let's say that I have:

pal1 = "a@b?a"
pal1 = /[a-z0-9]/.match(pal1)

When I put this in http://www.rubular.com/, it says that the Match result is: aba

But whe I run the code in my ruby it is not true, it gives only "a"

How can I change my Regex to achieve aba in pal1.

Thanks in advance for your time.

Upvotes: 1

Views: 89

Answers (2)

hwnd
hwnd

Reputation: 70722

You can use gsub to remove these characters.

pal1 = 'a@b?a'
pal1.gsub(/[^a-z0-9]/i, '')
# => "aba"

You can also use scan to match these characters and join them together.

pal1 = 'a@b?a'
pal1.scan(/[a-z0-9]/i).join
# => "aba"

Upvotes: 6

Phrogz
Phrogz

Reputation: 303205

You can do either of:

pal1.gsub!( /[^a-z\d]/i, '' )     # Kill all characters that don't match
pal1 = pal1.scan(/[a-z\d]/i).join # Find all the matching characters as array
                                  # and then join them all into one string.

Upvotes: 1

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