conflicting_type_variable_and_member

'{0}' can't be used to name both a type parameter and a member in this class.

'{0}' can't be used to name both a type parameter and a member in this enum.

'{0}' can't be used to name both a type parameter and a member in this extension type.

'{0}' can't be used to name both a type parameter and a member in this extension.

'{0}' can't be used to name both a type parameter and a member in this mixin.

The analyzer produces this diagnostic when a class, mixin, or extension declaration declares a type parameter with the same name as one of the members of the class, mixin, or extension that declares it.

The following code produces this diagnostic because the type parameter T has the same name as the field T:

class C<T> {
  int T = 0;
}

Rename either the type parameter or the member with which it conflicts:

class C<T> {
  int total = 0;
}