Check methods used to check a string. e.g. Email domain validation

string_check.rb

# 
# Small script to check the difference between methods
# that compare strings
# 
# motivation: to check for a domain in an email for use in validation
# 
def check (list, string, regex_string, verbose=true)
  w_include = 0
  w_regex = 0
  puts "Check via include?"
  list.each do |s|
    r = s.include?(string)
    w_include += 1 if r
    puts "#{s} : #{r}" if verbose
  end
  puts "Check via regex"
  list.each do |s|
    r = s.match?(/#{regex_string}/) 
    w_regex += 1 if r
    puts "#{s} : #{r}" if verbose
  end
  p_include = w_include.to_f / list.count * 100
  p_regex = w_regex.to_f / list.count * 100
  h_include = { "name" => "With Include?", "Percentage" => p_include}
  h_regex = { "name" => "With Regex", "Percentage" => p_regex}
  winner = p_include > p_regex ? h_include : h_regex
  arbitrary_threshold = 60.to_f
  but_is_it = winner["name"] if winner["Percentage"] > arbitrary_threshold
  puts "Percentage of difference:"
  puts "With include? is #{p_include}%"
  puts "With regex is #{p_regex}%"

  puts "The winner is #{but_is_it}"
  return
end

list = %w(
  [email protected]
  [email protected]
  [email protected]
  [email protected]
  yourdomain@[email protected]
  @[email protected]
)

# run
check(list, "@yourdomain", "^(([email protected]).)*$", false)

# sample 
# > check(list, "@yourdomain", "^(([email protected]).)*$", false)
# Check via include?
# Check via regex
# Percentage of difference:
# With include? is 83.33333333333334%
# With regex is 50.0%
# The winner is With Include?
# nil