[#BloombergLP-bdlb-operator_le-023]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::operator<=
:relfileprefix: ../../
:mrdocs:

Return `true` if the specified `lhs` nullable object is ordered before the specified `rhs` or `lhs` and `rhs` have the same value, and `false` otherwise. (See `operator<` and `operator==`.)

== Synopsis

Declared in `<bdlb_nullablevalue.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class LHS_TYPE,
    class RHS_TYPE>
bool
operator<=(
    xref:BloombergLP/bdlb/NullableValue.adoc[NullableValue<LHS_TYPE>] const& lhs,
    RHS_TYPE const& rhs)
requires (!NullableValue_DerivedFromOptional<RHS_TYPE>) &&
    requires { { *lhs <= rhs } ‐> NullableValue_ConvertibleToBool; };
----


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