Sha256: 4fb1dd6a0fc7797b5a238d3ff9233c9fe1b2c644ca295c9bf266f7baecc0aaf6
Contents?: true
Size: 1.48 KB
Versions: 5
Compression:
Stored size: 1.48 KB
Contents
module Kernel
def instance_vars
InstanceVariables.new(self)
end
end
class InstanceVariables
include Enumerable
def initialize(delegate)
@delegate = delegate
end
def instance_delegate
@delegate
end
def each
@delegate.instance_variables.each do |name|
yield(name[1..-1].to_sym, @delegate.instance_variable_get(name))
end
end
def to_hash
h = {}
each do |name, value|
h[name] = value
end
h
end
def [](name)
name = atize(name)
@delegate.instance_variable_get(name)
end
def []=(name, value)
name = atize(name)
@delegate.instance_varaible_set(name,value)
end
def <<(pair)
name, value = *pair
name = atize(name)
@delegate.instance_varaible_set(name, value)
end
def update(hash)
hash.each do |pair|
self << pair
end
end
def keys
@delegate.instance_variables.collect do |name|
name[1..-1].to_sym
end
end
def names
@delegate.instance_variables.collect do |name|
name[1..-1]
end
end
def values
@delegate.instance_variables.collect do |name|
@delegate.instance_variable_get(name)
end
end
private
def atize(name)
name !~ /^@/ ? "@#{name}" : name
end
end
=begin demo
class Friend
attr_accessor :name, :age, :phone
def initialize(name, age, phone)
@name, @age, @phone = name, age, phone
end
end
f1 = Friend.new("John", 30, "555-1212")
p f1.variables
p f1.variables.to_hash
=end
Version data entries
5 entries across 5 versions & 1 rubygems