أنواع البيانات المعممة

You can use generics to abstract over the concrete field type:

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Speaker Notes

This slide should take about 10 minutes.
  • Q: Why T is specified twice in impl<T> Point<T> {}? Isn’t that redundant?

    • This is because it is a generic implementation section for generic type. They are independently generic.
    • It means these methods are defined for any T.
    • It is possible to write impl Point<u32> { .. }.
      • Point is still generic and you can use Point<f64>, but methods in this block will only be available for Point<u32>.
  • Try declaring a new variable let p = Point { x: 5, y: 10.0 };. Update the code to allow points that have elements of different types, by using two type variables, e.g., T and U.