Sample code:
new CustomClass<string>()
Can you explain the significance of <string>? Does it denote the data type for the initial constructor input?
Sample code:
new CustomClass<string>()
Can you explain the significance of <string>? Does it denote the data type for the initial constructor input?
Generics in programming refer to a type argument that can be left open when designing a class or function, to be defined later. For example, consider the class Klass:
class Klass<T> {
data: T;
}
In this scenario, the class member data is of generic type T, which remains flexible within the class. It can be utilized as follows:
const instance = new Klass<number>();
instance.data = 123; // valid;
instance.data = "123"; // error
By defining instance as Klass<number>, the type parameter T becomes bound to the type argument number. Consequently, the type of instance.data is also number.
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