[#SpanWriter-2constructor-04]
= xref:SpanWriter.adoc[SpanWriter]::SpanWriter
:relfileprefix: ../
:mrdocs:

Construct a writer over an existing span of bytes to fill&period;

== Synopsis

Declared in `&lt;streams&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
SpanWriter(std::span&lt;std::byte&gt; dest);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *dest*
| Span of bytes the writer will fill&period;
|===


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