[#CTxMemPool-CalculateDescendants-0d]
= xref:CTxMemPool.adoc[CTxMemPool]::CalculateDescendants
:relfileprefix: ../
:mrdocs:

Populate setDescendants with all in‐mempool descendants of the given entry.

== Synopsis

Declared in `<txmempool.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[requires_capability(0x7ff37b420968), requires_capability(0x7ff376fd8318), requires_capability(0x7ff38def7538), requires_capability(0x7ff3640f8548), requires_capability(0x7ff3920f8838), requires_capability(0x7ff37f5ca958), requires_capability(0x7ff37d011bd8), requires_capability(0x7ff374c153e8)]]
xref:CTxMemPool/txiter.adoc[CTxMemPool::txiter]
CalculateDescendants(
    xref:CTxMemPoolEntry.adoc[CTxMemPoolEntry] const& entry,
    xref:CTxMemPool/setEntries.adoc[setEntries]& setDescendants) const;
----

== Return Value

An iterator to the entry in the mempool.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *entry*
| The transaction entry whose descendants are collected.
| *setDescendants*
| The set that is populated with the descendants.
|===


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