[#mempoolentry_txid]
= mempoolentry&lowbar;txid
:mrdocs:

Extracts a transaction hash (txid) from a CTxMemPoolEntry or CTransactionRef&period;

== Synopsis

Declared in `&lt;txmempool&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct mempoolentry&lowbar;txid;
----

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:mempoolentry_txid/result_type.adoc[`result&lowbar;type`] 
| The type of hash produced by this extractor&period;
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:mempoolentry_txid/operator_call-0c.adoc[`operator()`] 
| Function call operators
|===



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