String#gsub version that takes two arrays: one as searches and one as replacements

gsub_array.rb

class String
  def gsub_array! find, replace
    find.each_index do |i|
      self.gsub! find[i], replace[i]
    end
    self
  end
  
  def gsub_array find, replace
    str = self.clone
    str.gsub_array! find, replace
  end
end


find = ['foo', 'bar', 'baz']
replace = ['foo-2', 'bar-2', 'baz-2']


str1 = 'foo bar baz'
str2 = 'foo bar baz'

puts str1.gsub_array find, replace # foo-2 bar-2 baz-2
puts str2.gsub_array! find, replace # foo-2 bar-2 baz-2

puts str1 # foo bar baz
puts str2 # foo-2 bar-2 baz-2