Add missed #include <optional>

std::optional<> is used multiple times here.

Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com>
This commit is contained in:
Matwey V. Kornilov 2021-06-17 13:14:56 +03:00
parent 4185c5954f
commit 37180e0842

View File

@ -2,6 +2,7 @@
#include <map>
#include <list>
#include <optional>
#include <string>
#include <set>
#include <initializer_list>