Returns an optional containing the result of applying f to the stored value, or a default value if there is no stored value.
Synopsis
Declared in <beman/optional/optional.hpp>
template<class F>
constexpr
auto
transform(F&& f);Description
Carries out some operation on the stored object if there is one.
Return Value
optional
Template Parameters
Name |
Description |
F |
Parameters
Name |
Description |
f |
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