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

Writes a human‐readable form of a chainstate role to a stream.

== Synopsis

Declared in `<kernel/chain.h>`

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

== Return Value

The output stream `os`.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *os*
| Output stream to write to.
| *role*
| Chainstate role to format.
|===


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