modified: eBook/18.11.md

modified:   eBook/18.5.md
	modified:   eBook/18.6.md
	modified:   eBook/18.8.md
	modified:   eBook/18.9.md
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songleo
2016-01-03 22:45:20 +08:00
parent 830785f46e
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# 18.5 接口
1如何检测一个值`v`是否实现了一个接口`Stringer`
1如何检测一个值`v`是否实现了接口`Stringer`
```go
if v, ok := v.(Stringer); ok {