[#BloombergLP-balcl-Constraint-Int64Constraint]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balcl.adoc[balcl]::xref:BloombergLP/balcl/Constraint.adoc[Constraint]::Int64Constraint
:relfileprefix: ../../../
:mrdocs:

Functor type that validates `Int64` option values&semi; see `TimeConstraint`&period;

== Synopsis

Declared in `&lt;balcl&lowbar;constraint&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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typedef xref:bsl/function-0a.adoc[bsl::function&lt;bool(xref:BloombergLP/bsls/Types/Int64.adoc[bsls::Types::Int64] const*, std::ostream&)&gt;] Int64Constraint;
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