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CH11.8 OK

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2015-09-02 11:01:54 +08:00
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eBook/11.8.md
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# 11.8 <20>ڶ<EFBFBD><DAB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD><EFBFBD>д
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><EFBFBD>ձ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뵽<EFBFBD><EFBFBD>д<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>棨<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽڻ<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>׼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>׼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><EFBFBD>ܵ<EFBFBD><EFBFBD>ȵȣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>߶<EFBFBD>д<EFBFBD><EFBFBD><EFBFBD>ǵ<EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͡<EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD>Ǵ<EFBFBD><EFBFBD>뾡<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD>ã<EFBFBD>Go <20><>ȡ<EFBFBD><C8A1>һ<EFBFBD>µķ<C2B5>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD>ݡ<EFBFBD>
`io` <20><><EFBFBD>ṩ<EFBFBD><E1B9A9><EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD><DAB6><EFBFBD>д<EFBFBD>Ľӿڣ<D3BF>`io.Reader` <20><> `io.Writer`
```go
type Reader interface {
Read(p []byte) (n int, err error)
}
type Writer interface {
Write(p []byte) (n int, err error)
}
```
ֻҪ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><EFBFBD><EFBFBD>˶<EFBFBD>д<EFBFBD>ӿڣ<EFBFBD><EFBFBD>ṩ `Read()` <20><> `Write` <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><CDBF>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>ǿɶ<C7BF><C9B6>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5> `io.Reader` <20>ӿڣ<D3BF><DAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD>ֻ<EFBFBD><D6BB>һ<EFBFBD><D2BB>ǩ<EFBFBD><C7A9><EFBFBD><EFBFBD> `Read(p []byte) (n int, err error)` <20>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD>϶<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD>Ѷ<EFBFBD><D1B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݷ<EFBFBD><DDB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5>ֽ<EFBFBD><D6BD><EFBFBD>Ƭ<EFBFBD>У<EFBFBD>Ȼ<EFBFBD>󷵻ض<F3B7B5BB>ȡ<EFBFBD><C8A1><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> `error` <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 'nil'<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD>ˣ<EFBFBD><CBA3>᷵<EFBFBD><E1B7B5> `io.EOF("EOF")`<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD>Ĺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>з<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD><EFBFBD>󣬾ͻ᷵<EFBFBD>ؾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶأ<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>ǿ<EFBFBD>д<EFBFBD>ģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><EFBFBD> `io.Writer` <20>ӿڣ<D3BF><DAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD>Ҳֻ<D2B2><D6BB>һ<EFBFBD><D2BB>ǩ<EFBFBD><C7A9><EFBFBD><EFBFBD> `Write(p []byte) (n int, err error)` <20>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>Ƭ<EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD>Ȼ<EFA3AC>󷵻<EFBFBD>ʵ<EFBFBD><CAB5>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>һ<EFBFBD><D2BB> `error` <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> `nil`<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
`io` <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> `Readers` <20><> `Writers` <20><><EFBFBD>Dz<EFBFBD><C7B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD>`bufio` <20><><EFBFBD><EFBFBD><EFBFBD>ṩ<EFBFBD>˶<EFBFBD>Ӧ<EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD>д `UTF-8` <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1>ļ<EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>á<EFBFBD><C3A1><EFBFBD> <20><>12<31><32> <20><><EFBFBD>ǻῴ<C7BB><E1BFB4>ʵսʹ<D5BD><CAB9><EFBFBD><EFBFBD><EFBFBD>ǵĺܶ<C4BA><DCB6><EFBFBD><EFBFBD>ӡ<EFBFBD>
<EFBFBD><EFBFBD>ʵ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>о<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵ<EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD>ӿڣ<EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ø<EFBFBD>ͨ<EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD>ʵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD>ӿڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ö<EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD> `JPEG` ͼ<>ν<EFBFBD><CEBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>һ<EFBFBD><D2BB> `Reader` <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Խ<EFBFBD><D4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4>̡<EFBFBD><CCA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӻ<EFBFBD><D3BB><EFBFBD> `gzip` ѹ<><D1B9><EFBFBD><EFBFBD> `HTTP` <20><><EFBFBD>е<EFBFBD> `JPEG`ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD>ʵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>`Reader` <20>ӿڵĶ<DAB5><C4B6><EFBFBD><EFBFBD><EFBFBD>
- [Ŀ¼](directory.md)
- <20><>һ<EFBFBD>£<EFBFBD>[11.7 <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD>ʹ<EFBFBD><CAB9>Sorter<65>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD><EFBFBD>](11.7.md)
- <20><>һ<EFBFBD>ڣ<EFBFBD>[11.9 <20>սӿ<D5BD>](11.9.md)

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- 11.5 [测试一个值是否实现了某个接口](11.5.md)
- 11.6 [使用方法集与接口](11.6.md)
- 11.7 [第一个例子：使用Sorter接口排序](11.7.md)
- 11.8 [第二个例子：读和写](11.8.md)
## 第三部分：Go 高级编程