Applies a function to the contained value if there is one.

Synopsis

Declared in <beman/optional/optional.hpp>

template<class F>
constexpr
auto
and_then(F&& f) const &;

Description

The return type is the same as std::invoke_result_t<F, T&>, but wrapped in an optional. The function f must return an optional type.

Return Value

auto

Template Parameters

Name

Description

F

The type of the invocable

Parameters

Name

Description

f

The invocable to apply to the contained value