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CH11.6 OK

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leisore
2015-08-31 14:09:42 +08:00
parent 2d9f2700a7
commit eaa4c89ef0
3 changed files with 94 additions and 1 deletions
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2
eBook/11.5.md
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@@ -26,4 +26,4 @@ if sv, ok := v.(Stringer); ok {
- [Ŀ¼](directory.md)
- <20><>һ<EFBFBD>£<EFBFBD>[11.4 <20><><EFBFBD><EFBFBD><EFBFBD>жϣ<D0B6>type-switch](11.4.md)
- <20><>һ<EFBFBD>ڣ<EFBFBD>[11.6 TODO](11.6.md)
- <20><>һ<EFBFBD>ڣ<EFBFBD>[11.6 ʹ<EFBFBD>÷<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD>](11.6.md)

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# 11.6 ʹ<>÷<EFBFBD><C3B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD>
<EFBFBD><EFBFBD> 10.6.3 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> methodset1.go <20><><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڱ<EFBFBD><DAB1><EFBFBD><EFBFBD>ϵķ<CFB5><C4B7><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><C7B2><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>뻹<EFBFBD><EBBBB9>ֵ<EFBFBD>ġ<EFBFBD><C4A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD><EFBFBD>ֵʱ<D6B5><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е㸴<D0B5>ӣ<EFBFBD>ԭ<EFBFBD><D4AD><EFBFBD>ǽӿڱ<D3BF><DAB1><EFBFBD><EFBFBD>д洢<D0B4>ľ<EFBFBD><C4BE><EFBFBD>ֵ<EFBFBD>Dz<EFBFBD><C7B2><EFBFBD>Ѱַ<D1B0>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD>˵<EFBFBD><CBB5>ǣ<EFBFBD><C7A3><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ò<EFBFBD><C3B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󡣿<EFBFBD><F3A1A3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><C4B3><EFBFBD><EFBFBD><EFBFBD>
ʾ<EFBFBD><EFBFBD> 11.5 methodset2.go:
```go
package main
import (
"fmt"
)
type List []int
func (l List) Len() int {
return len(l)
}
func (l *List) Append(val int) {
*l = append(*l, val)
}
type Appender interface {
Append(int)
}
func CountInto(a Appender, start, end int) {
for i := start; i <= end; i++ {
a.Append(i)
}
}
type Lener interface {
Len() int
}
func LongEnough(l Lener) bool {
return l.Len()*10 > 42
}
func main() {
// A bare value
var lst List
// compiler error:
// cannot use lst (type List) as type Appender in argument to CountInto:
// List does not implement Appender (Append method has pointer receiver)
// CountInto(lst, 1, 10)
if LongEnough(lst) { // VALID:Identical receiver type
fmt.Printf("- lst is long enough\n")
}
// A pointer value
plst := new(List)
CountInto(plst, 1, 10) //VALID:Identical receiver type
if LongEnough(plst) {
// VALID: a *List can be dereferenced for the receiver
fmt.Printf("- plst is long enough\n")
}
}
```
**<EFBFBD><EFBFBD><EFBFBD><EFBFBD>**
<EFBFBD><EFBFBD> `lst` <20>ϵ<EFBFBD><CFB5><EFBFBD> `CountInto` ʱ<>ᵼ<EFBFBD><E1B5BC>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ `CountInto` <20><>Ҫһ<D2AA><D2BB> `Appender`<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD><EFBFBD> `Append` ֻ<><D6BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>ϡ<EFBFBD> <20><> `lst` <20>ϵ<EFBFBD><CFB5><EFBFBD> `LongEnough` <20>ǿ<EFBFBD><C7BF>Ե<EFBFBD><D4B5><EFBFBD>Ϊ 'Len' <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD>ϡ<EFBFBD>
<EFBFBD><EFBFBD> `plst` <20>ϵ<EFBFBD><CFB5><EFBFBD> `CountInto` <20>ǿ<EFBFBD><C7BF>Եģ<D4B5><C4A3><EFBFBD>Ϊ `CountInto` <20><>Ҫһ<D2AA><D2BB> `Appender`<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD><EFBFBD> `Append` <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>ϡ<EFBFBD> <20><> `plst` <20>ϵ<EFBFBD><CFB5><EFBFBD> `LongEnough` Ҳ<>ǿ<EFBFBD><C7BF>Եģ<D4B5><C4A3><EFBFBD>Ϊָ<CEAA><D6B8><EFBFBD>ᱻ<EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>á<EFBFBD>
**<EFBFBD>ܽ<EFBFBD>**
<EFBFBD>ڽӿ<EFBFBD><EFBFBD>ϵ<EFBFBD><EFBFBD>÷<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>кͷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ͬ<EFBFBD>Ľ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><EFBFBD>ԴӾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> `P` ֱ<>ӿ<EFBFBD><D3BF>Ա<EFBFBD>ʶ<EFBFBD>ģ<EFBFBD>
- ָ<>뷽<EFBFBD><EBB7BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
- ֵ<><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>
- <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><C3A3><EFBFBD>Ϊָ<CEAA><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱ<EFBFBD><C8B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
- <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>ֵ<EFBFBD><D6B5><EFBFBD>ã<EFBFBD><C3A3><EFBFBD>Ϊ<EFBFBD>洢<EFBFBD>ڽӿ<DABD><D3BF>е<EFBFBD>ֵû<D6B5>е<EFBFBD>ַ
<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ӿڸ<EFBFBD>ֵʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><EFBFBD>ܵĽӿڷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>ֵ<EFBFBD>ϱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˲<EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD>ĸ<EFBFBD>ֵ<EFBFBD>ڱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ھͻ<EFBFBD>ʧ<EFBFBD>ܡ<EFBFBD>
<EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD>
Go<EFBFBD><EFBFBD><EFBFBD>Թ淶<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽ӿڷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><EFBFBD>ù<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
- <20><><EFBFBD><EFBFBD> *T <20>Ŀɵ<C4BF><C9B5>÷<EFBFBD><C3B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ *T <20><> T <20><><EFBFBD><EFBFBD><EFBFBD>з<EFBFBD><D0B7><EFBFBD><EFBFBD><EFBFBD>
- <20><><EFBFBD><EFBFBD> T <20>Ŀɵ<C4BF><C9B5>÷<EFBFBD><C3B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ T <20><><EFBFBD><EFBFBD><EFBFBD>з<EFBFBD><D0B7><EFBFBD>
- <20><><EFBFBD><EFBFBD> T <20>Ŀɵ<C4BF><C9B5>÷<EFBFBD><C3B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ *T <20>ķ<EFBFBD><C4B7><EFBFBD>
- [Ŀ¼](directory.md)
- <20><>һ<EFBFBD>£<EFBFBD>[11.5 <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ֵ<EFBFBD>Ƿ<EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD>ij<EFBFBD><C4B3><EFBFBD>ӿ<EFBFBD>](11.5.md)
- <20><>һ<EFBFBD>ڣ<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)

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eBook/directory.md
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@@ -99,6 +99,7 @@
- 11.3 [类型断言：如何检测和转换接口变量的类型](11.3.md)
- 11.4 [类型判断：type-switch](11.4.md)
- 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)
## 第三部分：Go 高级编程