[Help] Can someone please explain to me why this won't work (Reflection)

<p>Solved: thanks <a href="/u/dilap" rel="nofollow">/u/dilap</a> I was comparing the reflect.Value&#39;s, not the actual interfaces in reflect.DeepEqual().</p> <p><a href="https://play.golang.org/p/RfHAgoMmDm" rel="nofollow">Go Playground</a></p> <p><a href="https://pastebin.com/raw/erbE9w4U" rel="nofollow">Pastebin Mirror</a></p> <p>I just see no reason it won&#39;t work:</p> <ol> <li><p>It checks to make sure that the interface{} is a slice or array.</p></li> <li><p>It ranges over the slice/array and if any element of the slice and the supplied value are deeply equal it returns true.</p></li> <li><p>Otherwise, return false. (Array/Slice does not contain value).</p></li> </ol> <p>This reflection stuff is hard :/</p> <hr/>**评论：**<br/><br/>dilap: <pre><p>Here you go:</p> <p><a href="https://play.golang.org/p/kgAywwVMym" rel="nofollow">https://play.golang.org/p/kgAywwVMym</a></p> <p>The problem is that DeepEqual wants the interface{}, not a reflect.Value. The reflect.Value themselves are not equal, but the values they represent are equal.</p> <p>(As an aside, I would advocate not using reflection for something this. It will be slow, and defeats the type safety the language gives you. I would just write separate versions of contains for each type that you need. E.g., in this case, right conatins for []int. If you also need it for strings, then write containsInt and containsString. Sure, it&#39;s some copy-paste code duplication, but so what -- it&#39;s simple, fast, easy to understand code.)</p></pre>bkeroack: <pre><p>&#34;[Reflection] is not for you&#34; -- Rob Pike <a href="https://www.youtube.com/watch?v=PAAkCSZUG1c&amp;t=15m29s" rel="nofollow">https://www.youtube.com/watch?v=PAAkCSZUG1c&amp;t=15m29s</a></p></pre>Franke123: <pre><p>Ah, that makes sense! It was comparing the reflect.Value&#39;s, not the underlying interfaces. Thank you for the explanation!</p> <p>As the response to the aside: I was just doing this for fun to learn about reflection, I usually just do a containsInt type thing for something like this. Thank you so much!</p></pre>dilap: <pre><p>Happy to help!</p></pre>