feature

Type-Unsafe Pointers

1. NO reference only pointer type

没有引用类型；使用指针作复合数据 特殊的指针:

1. No care pointer cycleLife

   garbage collector;

2. limit the usage of pointer:
   1. No pointer convert;
   2. No pointer arithmetic

   use unsafe.Pointer

unsafe.Pointer

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package unsafe
type ArbitraryType int //表示任何类型
type Pointer *ArbitraryType //表示任何类型的指针