# Functions
题目一:性能考察.
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题目二: 引用循环变量下标.
RangeArray 演示Range遍历数组.
RangeArrayPointer 演示range遍历数组的指针 数组的指针与数组一致.
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题目五:动态遍历.
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题目三:range nil channel 永久阻塞.
Range遍历切片与遍历数组操作一致。 但不能作用于切片的地址,否则会有编译错误: cannot range over &s (type *[]int).
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len(“中国”) == 6,长度代表底层存储.
题目四: range 会一直阻塞到channel关闭.