Ruby: How to replace the words in string by two arrays?

Question

My case:

text = "[A] and [B]"
search = ["[A]", "[B]", "[C]", "[D]", "[Aa]"]
replace = ["[B]", "[C]", "[D]", "[E]", "[Bb]"]

i want to replace value of text to "[B] and [C]"

How can i do that? Thanks a lot!

Santhosh · Accepted Answer · 2015-03-25 07:42:46Z

8

text.gsub(/\[\w+\]/, Hash[search.zip replace])
# => "[B] and [C]"

answered Mar 25, 2015 at 7:42

Santhosh

29.3k9 gold badges84 silver badges88 bronze badges

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

5 Comments

Hieu Le Over a year ago

Thank you! it seem good. can i ask more? i have this case: text = "[A#] and [B]", search = ["[A#]", "[B]", "[C]", "[D]", "[Aa]"], replace = ["[B]", "[C]", "[D]", "[E]", "[Bb]"], and i still want to replace value of text to "[B] and [C]". How can i modify your method to use it?

Yevgeniy Anfilofyev Over a year ago

Just add # to gsub part, like this: .gsub(/\[\w+\#*\]/,

Hieu Le Over a year ago

Thank you @YevgeniyAnfilofyev, i tried to use .gsub(/\[\w+#\]/, and i forgot * after #

Stefan Over a year ago

Another option is to build the regular expression from the input array: text.gsub(Regexp.union(search), search.zip(replace).to_h)

Mark Thomas Over a year ago

This is a great answer, as is @Stefan's comment which makes it work for arbitrary search strings.

Collectives™ on Stack Overflow

Ruby: How to replace the words in string by two arrays?

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related