How to merge multiple strings and int into a single string
<p>I am a newbie in Go. I can't find any official docs showing how to merge multiple strings into a new string.  </p>

<p>What I'm expecting:  </p>

<p><strong>Input</strong>: <code>"key:"</code>, <code>"value"</code>, <code>", key2:"</code>, <code>100</code></p>

<p><strong>Output</strong>: <code>"Key:value, key2:100"</code></p>

<p>I want to use <code>+</code> to merge strings like in Java and Swift if possible.</p>