coerce.rb

class Foo
  def initialize()
     @num=5
  end

  def coerce(other)
    puts "Coerce called with #{other.inspect} and class #{other.class}"
    [other, @num]
  end

  def to_int
    puts "Called to_int"
    @num
  end

  def to_i
    puts "Called to_i"
    @num
  end


end


puts 5 === Foo.new
puts (1..10) === Foo.new

#####
# Output
# false
# Coerce called with 1 and class Integer
# false