class MyOpenStruct < BasicObject
def initialize(initial_values = {})
@values = initial_values
end
def _singleton_class
class << self
self
end
end
def method_missing(name, *args, &block)
if name[-1] == "="
base_name = name[0..-2].intern
_singleton_class.instance_exec(name) do |name|
define_method(name) do |value|
@values[base_name] = value
end
end
@value[base_name] = args[0]
else
#super unless @values.has_key? name
_singleton_class.instance_exec(name) do |name|
define_method(name) do
@values[name]
end
end
@values[name]
end
end
end
my = MyOpenStruct.new(name: "chenchao")
my.address = "beijing"
my.likes = "beauty girl"
puts "#{my.name} lives in #{my.address} , likes #{my.likes}"
执行收到错误信息是
/home/stephan/work/test/hook.rb:61:in method_missing': undefined method[]=' for nil:NilClass (NoMethodError)
from /home/stephan/work/test/hook.rb:74:in `'
检查程序没发现错误，求指教
无引用文章
krazy
#1
2013年04月09日
不排版是故意设置的门槛吗...哇哈哈哈哈
好像有很多拼写错误啊 比如 base_name 一下就成了 basename, @values的循环外面也有@value?
还有singleton_class 前面那个?改了应该就没问题了吧
class MyOpenStruct
def initialize(initial_values = {})
@values = initial_values
end
def method_missing(name, *args, &block)
if name[-1] == "="
base_name = name[0..-2].intern
@values[base_name] = args[0]
else
@values[name]
end
end
end
my = MyOpenStruct.new(name: "chenchao")
my.address = "beijing"
my.likes = "beauty girl"
puts "#{my.name} lives in #{my.address} , likes #{my.likes}"
似乎可以删除部分代码。
