Golang的func参数及返回值
发布时间：2022-03-12 编辑：jiaochengji.com
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参数及返回值
参数一指定数据类型为int
参数二 (…interface{}) 可传任何多个不同类型的参数
返回值：单个返回值直接指定数据类型可以不使用 ()，多个返回值需使用()。各返回值之间使用逗号分隔
<pre><code class="lang-go hljs"><span class="token keyword">func</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
demo<span class="token punctuation">.</span><span class="token function">Params</span><span class="token punctuation">(</span><span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">,</span> <span class="token string">"golang"</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
<span class="token keyword">func</span> <span class="token function">Params</span><span class="token punctuation">(</span>id <span class="token builtin">int</span><span class="token punctuation">,</span> params <span class="token operator">...</span><span class="token keyword">interface</span><span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token punctuation">(</span><span class="token builtin">error</span><span class="token punctuation">,</span> <span class="token builtin">error</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
fmt<span class="token punctuation">.</span><span class="token function">Println</span><span class="token punctuation">(</span>id<span class="token punctuation">)</span>
fmt<span class="token punctuation">.</span><span class="token function">Println</span><span class="token punctuation">(</span>params<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">)</span>
fmt<span class="token punctuation">.</span><span class="token function">Println</span><span class="token punctuation">(</span>params<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">)</span>
fmt<span class="token punctuation">.</span><span class="token function">Println</span><span class="token punctuation">(</span>params<span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span><span class="token punctuation">)</span>
<span class="token keyword">for</span> key<span class="token punctuation">,</span> val <span class="token operator">:=</span> <span class="token keyword">range</span> params <span class="token punctuation">{</span>
fmt<span class="token punctuation">.</span><span class="token function">Println</span><span class="token punctuation">(</span><span class="token string">"key"</span><span class="token punctuation">,</span> key<span class="token punctuation">)</span>
fmt<span class="token punctuation">.</span><span class="token function">Println</span><span class="token punctuation">(</span><span class="token string">"val"</span><span class="token punctuation">,</span> val<span class="token punctuation">,</span> reflect<span class="token punctuation">.</span><span class="token function">TypeOf</span><span class="token punctuation">(</span>val<span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
<span class="token keyword">return</span> <span class="token boolean">nil</span><span class="token punctuation">,</span> errors<span class="token punctuation">.</span><span class="token function">New</span><span class="token punctuation">(</span><span class="token string">"error"</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
Debug如下
<blockquote class="layui-elem-quote" style="width: 100%;overflow:hidden">
作者： qq_18361349
链接： https://blog.csdn.net/qq_18361349/article/details/105468883
著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。
</blockquote>
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