pkg os, type FileInfo = fs.FileInfo
pkg os, type FileMode = fs.FileMode
pkg os, type PathError = fs.PathError
pkg os, var ErrProcessDone error
pkg os/signal, func NotifyContext(context.Context, ...os.Signal) (context.Context, context.CancelFunc)
pkg path/filepath, func WalkDir(string, fs.WalkDirFunc) error
pkg runtime/metrics, const KindBad = 0
pkg runtime/metrics, const KindBad ValueKind
pkg runtime/metrics, const KindFloat64 = 2

function and method <a href="#Calls">calls</a> and
<a href="#Receive_operator">receive operations</a>
can appear in statement context. Such statements may be parenthesized.
</p>

<pre class="ebnf">
ExpressionStmt = Expression .
</pre>

<p>
The following built-in functions are not permitted in statement context:
</p>

<pre>
append cap complex imag len make new real