[#BSLSTL_VARIANT_DEFINE_IF_CONSTRUCTS_FROM_STD]
= BSLSTL_VARIANT_DEFINE_IF_CONSTRUCTS_FROM_STD
:mrdocs:

This component‐private macro is used as a constraint when defining constructors of `variant` from the corresponding `std::variant`.

== Synopsis

Declared in `<bslstl_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
#define BSLSTL_VARIANT_DEFINE_IF_CONSTRUCTS_FROM_STD(STD_VARIANT)

----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *STD_VARIANT*
| `std::variant` specialization under consideration
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#