Ruby | Ruby2.0新規要素 | Nil#to_hの追加

サンプルコード

# encoding: utf-8
require 'tbpgr_utils'
require 'attributes_initializable'
require 'attributes_hashable'

class Person
  include AttributesInitializable
  attr_accessor_init :name, :age
  include AttributesHashable

  alias_method :to_h, :to_hash
end

hoge = Person.new({name: 'hoge', age: 49})
hige = nil

[hoge, hige].each do |h|
  bulk_puts_eval binding, <<-EOS
h.to_h
  EOS
end
***出力
>||
h.to_h # => {:name=>"hoge", :age=>49}
h.to_h # => {}