go语言之类型与接口的关系

<svg xmlns="http://www.w3.org/2000/svg" style="display: none;"><path stroke-linecap="round" d="M5,0 0,2.5 5,5z" id="raphael-marker-block" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);"/></svg><pre><code>go语言的类型和接口的之间是一对多(或多对一)的关系 以下为概念实例生产理解，便于以后在复杂的类型与接口环境中使用 </code></pre>

一，一个类型可以实现多个接口 而接口间彼此独立，不知道对方的实现。

<pre><code class="lang-go hljs"><span class="token keyword">type</span> HandlerInterface <span class="token keyword">interface</span> <span class="token punctuation">{</span> <span class="token function">OnRequset</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token function">IsRequestOk</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token builtin">bool</span> <span class="token punctuation">}</span> <span class="token keyword">type</span> Test2 <span class="token keyword">struct</span><span class="token punctuation">{</span><span class="token comment">//... </span> <span class="token punctuation">}</span> <span class="token keyword">type</span> Test <span class="token keyword">struct</span><span class="token punctuation">{</span> ID <span class="token builtin">int</span> <span class="token comment">//普通结构</span> <span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token builtin">string</span> <span class="token comment">//接口函数</span> HandlerInterface <span class="token comment">//接口函数</span> Test2 <span class="token comment">//结构嵌套</span> <span class="token punctuation">}</span> <span class="token keyword">func</span> <span class="token function">NewTest</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">*</span>Test<span class="token punctuation">{</span><span class="token comment">//...</span> <span class="token keyword">return</span> <span class="token operator">&</span>Test<span class="token punctuation">{</span><span class="token punctuation">}</span> <span class="token punctuation">}</span> <span class="token keyword">func</span><span class="token punctuation">(</span>t <span class="token operator">*</span>Test<span class="token punctuation">)</span>OnRequset<span class="token punctuation">{</span><span class="token comment">//...</span> <span class="token punctuation">}</span> <span class="token keyword">func</span><span class="token punctuation">(</span>t <span class="token operator">*</span>Test<span class="token punctuation">)</span>IsRequestOk<span class="token punctuation">{</span><span class="token comment">//...</span> <span class="token punctuation">}</span> </code></pre>

二，一个接口可以有多个结构实现

<pre><code>一个接口的方法，不一定需要由一个类型完全实现， 接口的方法可以通过在类型中嵌入其他类型或者结构体来实现。 也就是说，使用者并不关心某个接口的方法是通过一个类型完全实现的， 还是通过多个结构嵌入到一个结构体中拼凑起来共同实现的。 </code></pre> <pre><code class="lang-go hljs"><span class="token comment">//老司机开车 这个接口函数可不是一个结构体完成的</span> <span class="token keyword">type</span> Car <span class="token keyword">interface</span> <span class="token punctuation">{</span> <span class="token function">Start</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment">// 开启</span> <span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token builtin">string</span> <span class="token comment">// 关闭</span> <span class="token punctuation">}</span> <span class="token comment">// 熄火</span> <span class="token keyword">type</span> Close <span class="token keyword">struct</span> <span class="token punctuation">{</span><span class="token comment">//...</span> <span class="token punctuation">}</span> <span class="token comment">// 实现Car 的close()方法</span> <span class="token keyword">func</span> <span class="token punctuation">(</span>c <span class="token operator">*</span>Close<span class="token punctuation">)</span> <span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token builtin">string</span> <span class="token punctuation">{</span><span class="token comment">//...</span> <span class="token punctuation">}</span> <span class="token comment">// 人为</span> <span class="token keyword">type</span> People <span class="token keyword">struct</span> <span class="token punctuation">{</span> Close <span class="token comment">// 嵌入日志器</span> <span class="token punctuation">}</span> <span class="token comment">// 实现Car的Start()方法</span> <span class="token keyword">func</span> <span class="token punctuation">(</span>p <span class="token operator">*</span>People<span class="token punctuation">)</span> <span class="token function">Start</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span><span class="token comment">//...</span> <span class="token punctuation">}</span></code></pre> 到此这篇关于“go语言之类型与接口的关系”的文章就介绍到这了,更多文章或继续浏览下面的相关文章，希望大家以后多多支持JQ教程网！

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