conflicting_generic_interfaces
The {0} '{1}' can't implement both '{2}' and '{3}' because the type arguments are different.
Description
#The analyzer produces this diagnostic when a class attempts to implement a generic interface multiple times, and the values of the type arguments aren't the same.
Example
#The following code produces this diagnostic because C
is defined to implement both I<int>
(because it extends A
) and I<String>
(because it implementsB
), but int
and String
aren't the same type:
class I<T> {}
class A implements I<int> {}
class B implements I<String> {}
class C extends A implements B {}
Common fixes
#Rework the type hierarchy to avoid this situation. For example, you might make one or both of the inherited types generic so that C
can specify the same type for both type arguments:
class I<T> {}
class A<S> implements I<S> {}
class B implements I<String> {}
class C extends A<String> implements B {}
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