[#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(0x7f95135d3068), requires_capability(0x7f9501b12448), requires_capability(0x7f950ec78638), requires_capability(0x7f9525ea8388), requires_capability(0x7f9515097ac8), requires_capability(0x7f950826bd68), requires_capability(0x7f94f856f478), requires_capability(0x7f9513c59668)]]
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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