[#RPCArg-Type]
= xref:RPCArg.adoc[RPCArg]::Type
:relfileprefix: ../
:mrdocs:

The JSON type expected for the argument.

== Synopsis

Declared in `<rpc/util.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum class Type : int;
----

== Members

[cols="1,4"]
|===
| Name| Description
| `OBJ` 
| A JSON object.
| `ARR` 
| A JSON array.
| `STR` 
| A JSON string.
| `NUM` 
| A JSON number.
| `BOOL` 
| A JSON boolean.
| `OBJ_NAMED_PARAMS` 
| Special type that behaves almost exactly like OBJ, defining an options object with a list of pre‐defined keys. The only difference between OBJ and OBJ_NAMED_PARAMS is that OBJ_NAMED_PARMS also allows the keys to be passed as top‐level named parameters, as a more convenient way to pass options to the RPC method without nesting them.
| `OBJ_USER_KEYS` 
| Special type where the user must set the keys e.g. to define multiple addresses; as opposed to e.g. an options object where the keys are predefined
| `AMOUNT` 
| Special type representing a floating point amount (can be either NUM or STR)
| `STR_HEX` 
| Special type that is a STR with only hex chars
| `RANGE` 
| Special type that is a NUM or [NUM,NUM]
|===



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