diff options
Diffstat (limited to 'src/utils/optional_bool.hpp')
| -rw-r--r-- | src/utils/optional_bool.hpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/utils/optional_bool.hpp b/src/utils/optional_bool.hpp index 59bbbab..867aca2 100644 --- a/src/utils/optional_bool.hpp +++ b/src/utils/optional_bool.hpp @@ -20,7 +20,7 @@ struct OptionalBool this->is_set = false; } - std::string to_string() + std::string to_string() const { if (this->is_set == false) return "unset"; @@ -33,3 +33,5 @@ struct OptionalBool bool is_set{false}; bool value{false}; }; + +std::ostream& operator<<(std::ostream& os, const OptionalBool& o); |