modified: eBook/18.1.md

modified:   eBook/18.11.md
	modified:   eBook/18.2.md
	modified:   eBook/18.5.md
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songleo
2016-01-03 22:15:04 +08:00
parent 8fdcfd3776
commit 63367af386
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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`是否实现了一个接口`Stringer`
```go
if v, ok := v.(Stringer); ok {