Naming convention
_t postfix
- Global or free typedef-ed types. Must.
_type postfix
- Class/Struct member typedefs. Must.
_enum postfix
- Enumerator.Not completely in applied.
_entity postfix
- Enumerant. Not completely in applied.
_name postfix
- typename parameter of template. 100% coverage.
_param postfix
- Rarely Used for parameter name.