tree 22efa35a9bbb1cf31778cf3c1777c60a6ec69338
parent ad7e686b5563a146728aa9477f6e814dc0a3cbd4
author William A. Kennington III <wak@google.com> 1539807317 -0700
committer William A. Kennington III <wak@google.com> 1539807440 -0700

mapbox/variant: Implement std::get_if interface

Some of the code in the openbmc project uses their own ad-hoc get_if
style interface. We need to provide one on the mapbox side to ease the
transition.

Tested:
    Built code against the get_if implementation to make sure it
    conforms to the same behavior as std::get_if.

Change-Id: I8560a2d13110ab7fd82a21835a5e233682003fa8
Signed-off-by: William A. Kennington III <wak@google.com>