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感受lambda之美，推荐收藏，需要时查阅
source link: https://juejin.im/post/5ce66801e51d455d850d3a4a
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一、引言二、java重要的函数式接口1、什么是函数式接口1.1 java8自带的常用函数式接口。1.2 惰性求值与及早求值2、常用的流2.1 collect(Collectors.toList())2.2 filter2.3 map2.4 flatMap2.5
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