symbol 真是難以理解呀...
class Foo
attr_accessor :abc
def test
puts :abc.object_id
puts abc
end
end
class Bar
attr_accessor :abc
def test
puts :abc.object_id
puts abc
end
end
foo = Foo.new
bar = Bar.new
puts "call foo.test"
foo.abc = 123
foo.test
puts "call bar.test"
bar.test
輸出
---------------------------------
call foo.test
288098
123
call bar.test
288098
nil
---------------------------------
從輸出看起來，bar & foo 的 :abc 有相同的object_id，但是
執行 foo.abc = 123 卻會寫到不同的地方，有沒有哪位先進
可以解釋一下...@@
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