Convert string numbers( in word format) to integer ruby

Question

If you have a string ten, is it possible to convert it to an integer 10 in Ruby? (maybe in rails?)

I value the developers at tryruby.org, and i

Answer 1

This is a simple lookup of strings to their numeric equivalent:

str_to_int_hash = {
  'zero'  => 0,
  'one'   => 1,
  'two'   => 2,
  'three' => 3,
  'four'  => 4,
  'five'  => 5,
  'six'   => 6,
  'seven' => 7,
  'eight' => 8,
  'nine'  => 9,
  'ten'   => 10
}

str_to_int_hash['ten']
=> 10

It's obvious there are many other missing entries, but it illustrates the idea.

If you want to go from a number to the string, this is the starting point:

int_to_str_hash = Hash[str_to_int_hash.map{ |k,v| [v,k] }]
int_to_str_hash[10]
=> "ten"