ges in Go 1 that will affect programmers
updating existing code; its reference point is the prior release, r60 (tagged as
r60.3). It also explains how to update code from r60 to run under Go 1.
</p>

<h2 id="language">Changes to the language</h2>

<h3 id="append">Append</h3>

<p>
The <code>append</code> predeclared variadic function makes it easy to grow a slice
by adding elements to the end.
A common use is to add bytes to the end of a byte slice when generating output.
However, <code>append</code> did not