Question

I have an input string and a pattern. I need to replace each match with a unique value. In C# I would do this:

var result = Regex.Replace(input, pattern, e => GenerateNewString());

How can I do this in Ruby?

Answer 1

The ruby equivalent of Regex.Replace is gsub, which is an instance method on String. The rest is basically the same as in the C# version (except for the syntax of course):

input.gsub(pattern) { generate_new_string }