Coupling is metric which can be computed for structural units at different levels (e.g. classes, namespaces, modules).
It measures how many other entities an entity depends on; and how many dependants it has.
The Efferent Coupling for a particular type is the number of types it directly depends on. Types declared in framework projects are also taken into account.
CppDepend's recommendation is that types where efferent coupling value is larger than 50, are types that depends on too many other types. They are complex and have more than one responsibility. They are good candidate for refactoring.
Coupling is metric which can be computed for structural units at different levels (e.g. classes, namespaces, modules). It measures how many other entities an entity depends on; and how many dependants it has.
The Efferent Coupling for a particular type is the number of types it directly depends on. Types declared in framework projects are also taken into account.
CppDepend's recommendation is that types where efferent coupling value is larger than 50, are types that depends on too many other types. They are complex and have more than one responsibility. They are good candidate for refactoring.