simple hash

hash.rb

class HashTable
  def initialize
    @bins = Array.new(11)
  end

  def [](key)
    @bins[bin_num(key)]
  end

  def []=(key, value)
    @bins[bin_num(key)] = value
  end

  def bin_num(key)
    key.hash % @bins.length
  end
end

hash = HashTable.new
hash[:hello] = 123

p hash[:hello]
p hash['hello']