[#BloombergLP-bdld-operator_lt-09e]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdld.adoc[bdld]::operator<
:relfileprefix: ../../
:mrdocs:

Return `true` if value of the specified `lhs` is less than value of the specified `rhs` and `false` otherwise. Value of `lhs` is less than value of `rhs`, if data value of `lhs` is less than data value of `rhs`, or they have the same data value and type value of `lhs` is less than type value of `rhs`.

== Synopsis

Declared in `<bdld_datumudt.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
operator<(
    xref:BloombergLP/bdld/DatumUdt.adoc[DatumUdt] const& lhs,
    xref:BloombergLP/bdld/DatumUdt.adoc[DatumUdt] const& rhs);
----


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