Remove “www”, “http://” from string

Question

How can I remove \"www\", \"http://\", \"https://\" from strings using Ruby?

I tried this but it didn\'t work:

s.gsub(\'/(?:http?:\\/\\/)?(?:www\\.)?         


        

Answer 1

s = s.sub(/^https?\:\/\//, '').sub(/^www./,'')

If you don't want to use s =, you should use sub!s instead of all subs.

The problems with your code are:

1. Question mark always follows AFTER an optional character
2. Always replace one pattern in a sub. You can "chain up" multiple operations.
3. Use sub instead of gsub and ^ in the beginning of Regexp so it only replaces the http:// in the beginning but leaves the ones in the middle.