Ruby stringified hash.

string_hash.rb

# I have been annoyed that hash[:key] != hash["key"], which has caused problems more than once when converting things to Sidekiq jobs, etc.
# This is a major hack, and it is probably not really useful unless you can monkey patch the Hash class, which I didn't succeed with.
# I will have to look into how Rack does the params magic...

class StringHash < Hash
  def []=(key, val)
    super(key.to_s, val)
  end

  def [](key)
    super(key.to_s)
  end

  def has_key?(key)
    super(key.to_s)
  end

  def merge(other_hash)
    new_hash = self.clone
    other_hash.each do |k,v|
      new_hash[k] = v
    end
    new_hash
  end

  def merge!(other_hash)
    other_hash.each do |k,v|
      self[k] = v
    end
    self
  end

  def values_at(*keys)
    super(*keys.map(&:to_s))
  end

  alias_method :include?, :has_key?
  alias_method :key?, :has_key?
  alias_method :member?, :has_key?
  alias_method :store, :[]=
  alias_method :update, :merge!
end

z.examples.rb

h = StringHash.new
h[:test] = "arnold"
h["test"] == h[:test] # => true
h.any? { |k,v| k == :test } # => false
h.merge!({kossa: 'muu'})