Converts a variant to a variant of another set of types.

Synopsis

Declared in <absl/types/variant.h>

template<
    typename To,
    typename Variant>
To
ConvertVariantTo(Variant&& variant);

Description

Each alternative of the target variant must be constructible from any type held by the source variant.

Example:

std::variant<name1, name2, float> InternalReq(const Req&);

// name1 and name2 are convertible to name std::variant<name, float> ExternalReq(const Req& req) { return absl::ConvertVariantTo<std::variant<name, float>>( InternalReq(req)); }

Return Value

A To constructed from the active alternative of variant.

Parameters

Name

Description

variant

The source variant to convert.

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