go 实现一个接口
<p><span style="font-size: 14pt">Go 语言提供了另外一种数据类型即接口，它把所有的具有共性的方法定义在一起，任何其他类型只要实现了这些方法就是实现了这个接口。</span></p><div class="cnblogs_code">
<pre><span style="font-size: 14pt"><span style="color: rgba(0, 0, 0, 1)">package main
import (
</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">fmt</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">
)
type Phone </span><span style="color: rgba(0, 0, 255, 1)">interface</span><span style="color: rgba(0, 0, 0, 1)"> {
call()
}
type NokiaPhone </span><span style="color: rgba(0, 0, 255, 1)">struct</span><span style="color: rgba(0, 0, 0, 1)"> {
}
type IPhone </span><span style="color: rgba(0, 0, 255, 1)">struct</span><span style="color: rgba(0, 0, 0, 1)"> {
}
func (nokiaPhone NokiaPhone) call() {
fmt.Println(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">I am Nokia, I can call you!</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">)
}
func (iPhone IPhone) call() {
fmt.Println(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">I am iPhone, I can call you!</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">)
}
func main() {
</span><span style="color: rgba(0, 0, 255, 1)">var</span><span style="color: rgba(0, 0, 0, 1)"> phone Phone
phone </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)">(NokiaPhone)
phone.call() </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> I am Nokia, I can call you!</span>
phone = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)">(IPhone)
phone.call() </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> I am iPhone, I can call you!</span>
}</span></pre>
</div>
<p><span style="font-size: 14pt"> </span></p><br><br>
来源：https://www.cnblogs.com/beatle-go/p/17958760
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