[#node-operator_lshift-03]
= xref:node.adoc[node]::operator<<
:relfileprefix: ../
:mrdocs:

Write a human‐readable name for a block file type to a stream.

== Synopsis

Declared in `<node/blockstorage.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::ostream&
operator<<(
    std::ostream& os,
    xref:node/BlockfileType.adoc[BlockfileType] const& type);
----

== Return Value

The stream `os,` to allow chaining.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *os*
| The output stream to write to.
| *type*
| The block file type to format.
|===


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