Pry Session Dump

gistfile1.rb

class Test < SimpleDelegator
  def initialize
  end  
end  
#=> nil

t = Test.new
#=> nil

t[:thing] = 'help'
#=> NoMethodError: undefined method `[]=' for nil:Test

class Test
  def initialize
    @galaxy = {}
    super @galaxy
  end  
end  
#=> nil

t = Test.new
#=> {}

t[:thing] = 'help'
#=> "help"

t
#=> {:thing=>"help"}

class Test
  def initialize
    @galaxy = {}
  end  
  def []=(sym, value)
    @galaxy[sym] = value
  end  
end  
#=> nil

t = Test.new
#=> nil

t[:thing] = 'help'
#=> "help"

t
#=> nil

class Test2
  def initialize
    @galaxy = {}
  end  
  def method_missing(*args, &block)
    @galaxy.send args, &block
  end  
end  
#=> nil

t = Test2.new
#=> #<Test2:0x007fa3bd04b448 @galaxy={}>

t[:thing] = 'help'
#=> TypeError: [:[]=, :thing, "help"] is not a symbol
#=> from (pry):33:in `method_missing'

class Test2
  def method_missing(sym, *args, &block)
    @galaxy.send sym, args, &block
  end  
end  
#=> nil

t = Test2.new
#=> #<Test2:0x007fa3bc85f220 @galaxy={}>

t[:thing] = 'help'
#=> ArgumentError: wrong number of arguments(1 for 2)
#=> from (pry):40:in `[]='

class Test2
  def method_missing(sym, *args, &block)  
    @galaxy.send sym, *args, &block    
  end  
end  
#=> nil

t = Test2.new
#=> #<Test2:0x007fa3bb8f0618 @galaxy={}>

t[:thing] = 'help'
#=> "help"

t
#=> #<Test2:0x007fa3bb8f0618 @galaxy={:thing=>"help"}>

t.to_s
#=> "#<Test2:0x007fa3bb8f0618>"

t.path
#=> NoMethodError: undefined method `path' for {:thing=>"help"}:Hash
#=> from (pry):47:in `method_missing'



class Test
  extend Forwardable
  def_delegators :@galaxy, :[]=

  def initialize
    @galaxy = {}
  end  
end  
#=> nil

t = Test.new
#=> #<Test:0x007fefcb882ad0 @galaxy={}>

t[:thing] = 'test'
#=> "test"

t
#=> #<Test:0x007fefcb882ad0 @galaxy={:thing=>"test"}>

t.path
#=> NoMethodError: undefined method `path' for #<Test:0x007fefcb882ad0 @galaxy={:thing=>"test"}>

class Test
  def_delegators :@name, :to_s

  def initialize
    @galaxy = {}
    @name = 'tester'
  end  
end  
#=> [:to_s]

t = Test.new
#=> tester

t.to_s
#=> "tester"

t[:thing] = 'test'
#=> "test"

t
#=> tester

t.inspect
#=> "tester"

class Test
  attr_reader :galaxy  
end  
#=> nil

t.galaxy
#=> {:thing=>"test"}