Functional Pipeline Lab

In this lab, you will implement three higher-order functions and chain them together into a pipeline.

Your Task

Implement these three functions:

1. filter(nums []int, keep func(int) bool) []int

• Returns a new slice containing only elements where keep(element) returns true

2. mapInts(nums []int, fn func(int) int) []int

• Returns a new slice with fn applied to each element

3. reduce(nums []int, init int, fn func(int, int) int) int

• Folds the slice into a single value, starting with init

Then in main, apply the pipeline to []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}:

1. Filter even numbers → print the filtered slice
2. Double each number with mapInts → print the doubled slice
3. Sum with reduce → print the final sum

Expected Output