variance annotationの例文

例文

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1. Use-site variance annotations provide additional flexibility, allowing more programs to type-check.
2. C # allows variance annotations on the parameters of interfaces, but not the parameters of classes.
3. Scala's rules for checking variance annotations are essentially the same as C #'s.
4. It is possible to design a type system where the compiler automatically infers the best possible variance annotations for all datatype parameters.
5. Use-site variance annotations aim to give users of a class more opportunities for subtyping without requiring the designer of the class to define multiple interfaces with different variance.