Reduce example

Here's an implementation for reducing a collection, using the alediaferia/go-collections package, to find the maximum value:

numbers := []interface{}{
    1,
    5,
    3,
    2,
}

coll := collections.NewFromSlice(numbers)
min  := collections.Reduce(0, func(a, b interface{}) interface{} {
    if a > b { return a } else { return b }
})

The Join function takes two different collections and combines them into a single, larger collection.

There are two basic types of functors in functional programming: intermediate functions and terminal functions. They work together to transform the incoming collection into either another collection or a single value. Any number of intermediate functions can be chained together followed by the terminal function.