Skip to content

Instantly share code, notes, and snippets.

@ayago

ayago/HigherOrderFunctions.java

Created July 25, 2019 09:30
Show Gist options
  • Save ayago/350b4cbd64b89a93b172f76d9bd389c5 to your computer and use it in GitHub Desktop.
Save ayago/350b4cbd64b89a93b172f76d9bd389c5 to your computer and use it in GitHub Desktop.
Download ZIP
Higher order Functions in Java
Raw
HigherOrderFunctions.java
import java.util.function.Function;
import static java.lang.String.format;
class HigherOrderFunctions {
public static void main(String[] args) {
Function<Integer, Integer> addOne = describeOperationFor(1);
Function<Integer, Integer> multiplyOne = a -> a * 1;
Function<Integer, Integer> subtractOne = a -> a - 1;
Function<Integer, Integer> divideByOne = a -> a / 1;
System.out.println(describeOperationFor3(addOne));
System.out.println(describeOperationFor3(multiplyOne));
System.out.println(describeOperationFor3(subtractOne));
System.out.println(describeOperationFor3(divideByOne));
}
//a higher order function that takes a function
private static String describeOperationFor3(Function<Integer, Integer> operation){
final Integer value = 3;
return format("Operation on 3 resulted to %s", operation.apply(3));
}
//a higher order function that returns a function
private static Function<Integer, Integer> describeOperationFor(Integer addend){
return a -> a + addend;
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment