tle and
	// author fields are both "", pages field is 0.
	book = Book{}

	// Only specify the author field. The title field
	// is "" and the pages field is 0.
	book = Book{author: "Tapir"}

	// Initialize a struct value by using selectors.
	var book2 Book // &lt;=&gt; book2 := Book{}
	book2.author = "Tapir Liu"
	book2.pages = 300
	fmt.Println(book2.pages) // 300
}
</code></pre>
<p></p>
<div class="tmd-usual">
The last <code class="tmd-code-span">,</code> in a composite literal is optional if the last item 