>struct {
	Title  string `json:"title" myfmt:"s1"`
	Author string `json:"author,omitempty" myfmt:"s2"`
	Pages  int    `json:"pages,omitempty" myfmt:"n1"`
	X, Y   bool   `myfmt:"b1"`
}
</code></pre>
<p></p>
<div class="tmd-usual">
Note, the tags of the <code class="tmd-code-span">X</code> and <code class="tmd-code-span">Y</code> fields in the above example are identical (though using field tags as this way is a bad practice).
</div>
<p></p>
<div class="tmd-usual">
We can use the <a href="reflection.html#stru