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August 29, 2015 13:57
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| module AttrInit | |
| def attr_init *attrs | |
| class_eval <<-DEF | |
| def initialize(#{attrs.join(', ')}) | |
| #{attrs.map{|a| "@#{a} = #{a}"}.join ?\n} | |
| end | |
| DEF | |
| end | |
| end | |
| Class.send :include, AttrInit |
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| class Foo | |
| attr_init :foo, :bar | |
| end | |
| f = Foo.new 1, 2 | |
| puts f.instance_variables.map{|ivar| "#{ivar} = #{f.instance_variable_get(ivar)}" } |
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