https://DevOpsCloud.io -- Cloud Monk Losang Jinpa

“default member initializer - one that is associated with the declaration of a nonstatic data member of a class type that may be used during construction when no other initializer is provided (e.g., from a constructor’s member initializer list). constexpr Functions (270), Default Member Init (318), Generalized PODs ’11 (426)” (EMCppSfe 2021)