[#CompareTxMemPoolEntryByEntryTime-operator_call]
= xref:CompareTxMemPoolEntryByEntryTime.adoc[CompareTxMemPoolEntryByEntryTime]::operator()
:relfileprefix: ../
:mrdocs:

Returns true if entry `a` entered the mempool before entry `b`.

== Synopsis

Declared in `<txmempool.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
operator()(
    xref:CTxMemPoolEntry.adoc[CTxMemPoolEntry] const& a,
    xref:CTxMemPoolEntry.adoc[CTxMemPoolEntry] const& b) const;
----

== Return Value

true if `a` entered the mempool before `b`.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| The first mempool entry to compare.
| *b*
| The second mempool entry to compare.
|===


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