[#RPCArg-2constructor-02]
= xref:RPCArg.adoc[RPCArg]::RPCArg
:relfileprefix: ../
:mrdocs:

Construct a composite argument (array or object) with inner arguments.

== Synopsis

Declared in `<rpc/util.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
RPCArg(
    std::string name,
    xref:RPCArg/Type.adoc[Type] type,
    xref:RPCArg/Fallback.adoc[Fallback] fallback,
    std::string description,
    std::vector<RPCArg> inner,
    xref:RPCArgOptions.adoc[RPCArgOptions] opts = {});
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *name*
| The argument name, or aliases separated by '|'.
| *type*
| The expected JSON type (an array or object type).
| *fallback*
| Default value or optionality of the argument.
| *description*
| Human‐readable description of the argument.
| *inner*
| The arguments nested inside this array or object.
| *opts*
| Additional options controlling validation and rendering.
|===


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