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jiashu_ji
@jiashuji
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NO. 10785 /
2013-12-28
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我该如何理解这一行代码呢?arr.sort {|item1,item2| item2 <=> item1}
at
December 28, 2013
#8 楼
@
zkai
那如果 block 直接替换成一个值会发生什么情况?