pkg io/fs, var ErrClosed error
pkg io/fs, var ErrExist error
pkg io/fs, var ErrInvalid error
pkg io/fs, var ErrNotExist error
pkg io/fs, var ErrPermission error
pkg io/fs, var SkipDir error
pkg log, func Default() *Logger
pkg net, var ErrClosed error
pkg net/http, func FS(fs.FS) FileSystem
pkg net/http, type Transport struct, GetProxyConnectHeader func(context.Context, *url.URL, string) (Header, error)
pkg os, const ModeAppend fs.FileMode

by any predeclared type in the language. The following are legal declarations:
</p>

<pre>
const Huge = 1 &lt;&lt; 100         // Huge == 1267650600228229401496703205376  (untyped integer constant)
const Four int8 = Huge &gt;&gt; 98  // Four == 4                                (type int8)
</pre>

<p>
The divisor of a constant division or remainder operation must not be zero: