BloombergLP::bslstl::Variant_IsAlternativeConstructibleFrom<t_VARIANT, t_TYPE, bsl::variant_npos>

Derive from bsl::false_type when there is no unique best match.

Synopsis

Declared in <bslstl_variant.h>

template<
    class t_VARIANT,
    class t_TYPE>
struct Variant_IsAlternativeConstructibleFrom<t_VARIANT, t_TYPE, bsl::variant_npos>
    : bsl::false_type

Description

This partial specialization of Variant_IsAlternativeConstructibleFrom derives from bsl::false_type when there is no unique best match alternative (i.e., t_INDEX is bsl::variant_npos).

Base Classes

NameDescription
bsl::false_typeMetafunction representing the boolean constant false.