[#BSLSTL_VARIANT_CONVERT_INDEX_OF]
= BSLSTL&lowbar;VARIANT&lowbar;CONVERT&lowbar;INDEX&lowbar;OF
:mrdocs:

This component&hyphen;private macro expands to the index of the first alternative in the specified `VARIANT` that is a &quot;unique&quot; best match for conversion from `std&colon;&colon;declval&lt;TYPE&gt;()`&period; See the documentation for `Variant&lowbar;ConvertIndex` for more details&period;

== Synopsis

Declared in `&lt;bslstl&lowbar;variant&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
#define BSLSTL&lowbar;VARIANT&lowbar;CONVERT&lowbar;INDEX&lowbar;OF(TYPE, VARIANT)

----


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