var dic = [0:0, 1:0, 2:0] var newDic = dic dic[0] = 1
newDic=[0: 0, 1: 0, 2: 0]
newDic=[0: 1, 1: 0, 2: 0]
dic=[0: 0, 1: 0, 2: 0]
编译错误
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