[#CBaseChainParams-2constructor-0e]
= xref:CBaseChainParams.adoc[CBaseChainParams]::CBaseChainParams
:relfileprefix: ../
:mrdocs:

Constructs base parameters from a data directory and RPC port.

== Synopsis

Declared in `<chainparamsbase.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
CBaseChainParams(
    std::string const& data_dir,
    uint16_t rpc_port);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *data_dir*
| The default data directory name.
| *rpc_port*
| The default RPC port number.
|===


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