[#BloombergLP-bdlt-operator_lt-04]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::operator<
:relfileprefix: ../../
:mrdocs:

Return `true` if the nominal relation between the specified `lhs` and `rhs` time interval values holds, and `false` otherwise. `lhs` is less than `rhs` if the following expression evaluates to `true`: ` lhs.days() < rhs.days() || (lhs.days() == rhs.days() && lhs.fractionalDayInMicroseconds() < rhs.fractionalDayInMicroseconds()) ` The other relationships are defined similarly.

== Synopsis

Declared in `<bdlt_datetimeinterval.h>`

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


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