[#bsl-variant_npos]
= xref:bsl.adoc[bsl]::variant_npos
:relfileprefix: ../
:mrdocs:

This value is returned by `bsl::variant::index()` if `valueless_by_exception()` is `true`.

== Synopsis

Declared in `<bslstl_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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constexpr std::size_t variant_npos = ‐1;
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