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泛型中extends和super的区别 #2

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泛型中extends和super的区别#2
@jiuxingmu

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@jiuxingmu
jiuxingmu
opened on Jan 21, 2019

extends T 表示包括T在内的任何T的子类 上界通配符
super T 表示包括T在内的任何T的父类 下界通配符

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