SCALA TYPE BOUNDS

  • date 18th February, 2021 |
  • by Prwatech |
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Scala Upper Bounds

Scala has a couple of restrictions on the Type Parameters or Type Variable that is type bound, and the upper bound is one of them. By implementing Type Bounds, we can explain the restraints of a Type Variable, these type bound restricts the definite values of the type variables and discloses more details about the member of these types. The upper bound is defined on type parameters.

A program to demonstrate scala upper bounds:

Scala Lower Bounds

Lower type bounds are used to declare a super type of another type. A lower bound is denoted by >: Any lower bound statement can be written as ‘[T>: S]’. Here T is a type parameter and S is a type. The above lower bound statement means that the type parameter T must be either the same as S or of a super type of S.

Here, the lower bound is defined in class DataSciencePortal, and Prwatech is the Superclass of Training. It is accepted in the lower bound.

A program to demonstrate Scala Lower Bounds:

Scala View Bound

Type Bounds in Scala have restrictions on type parameters or type variables. By the usage of these type of bounds, we can set up limits for the variables. These bounds help to put our code into real-world examples. We need to impose certain limitations and boundaries to every factor in real life, that is what the Type bounds do in Scala.

The view Bound is one of the types of bound used in Scala. The view bound is basically used where existing implicit conversions are used automatically on their own. In some programs, to solve any problem implicit conversions are done automatically. The view bound is used to take advantage of these implicit conversions and work more efficiently.

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