[#fmt-formatter-047-format]
= xref:fmt.adoc[fmt]::xref:fmt/formatter-047.adoc[formatter<folly::rich_ptr_to_underlying_error<Ex>>]::format
:relfileprefix: ../../
:mrdocs:

Formats `p` (and any epitaph stack) into the output of `ctx`.

== Synopsis

Declared in `<folly/result/rich_error_base.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
format_context::iterator
format(
    xref:folly/rich_ptr_to_underlying_error.adoc[folly::rich_ptr_to_underlying_error<Ex>] const& p,
    format_context& ctx) const;
----

== Return Value

An iterator past the written output.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *p*
| The rich‐error pointer to format.
| *ctx*
| The format context to write into.
|===


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