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

Constructs the index, which becomes available to be queried.

== Synopsis

Declared in `<index/txospenderindex.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
TxoSpenderIndex(
    std::unique_ptr<interfaces::Chain> chain,
    size_t n_cache_size,
    bool f_memory = false,
    bool f_wipe = false);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *chain*
| Interface used to query the blockchain.
| *n_cache_size*
| Size of the database cache, in bytes.
| *f_memory*
| Keep the database in memory instead of on disk.
| *f_wipe*
| Erase any existing database before opening.
|===


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