Scala Upper and lower bounds _upper type Bounds_lower type Bounds

Scala Upper and lower bounds _upper type Bounds_lower type Bounds

Type Bounds

When defining a parameterized type or method, it is necessary to specify bounds the type. For example, a parameterized type might assume (assuming) that a particular

Type parameter contains certain methods.

Upper Type bounds-Upper bound

S <: T

This is the definition of the upper bounds of the type, that is, s must be a subclass of type T (or itself, itself can be considered a subclass of its own).

Lower Type bounds-Nether

S <: T

This is the definition of the upper bounds of the type, that is, s must be a subclass of type T (or itself, itself can be considered a subclass of its own).

Scala Upper and lower bounds _upper type Bounds_lower type Bounds