Auto-Boxing in method FlatMap

[orbitoo]

package main

import "github.com/samber/mo"

func main() {
    var x float64 = 2.0
    op := mo.Some(x)
    square := func(x float64) mo.Option[float64] { return mo.Some(x * x) }
    cubic := func(x float64) mo.Option[float64] { return mo.Some(x * x * x) }
    print(op.FlatMap(square).FlatMap(cubic).OrElse(-1))
}

This is an example of using this package, but I suppose function square should be

    square := func(x float64) float64 { return x * x }

This declaration of mapping functions is better, I think.

Consider change the FlatMap into

func (o Option[T]) FlatMap(mapper func(T) T) Option[T] {
    if o.isPresent {
        return Some(mapper(o.value))
    }
    return None[T]()
}

[rbee3u]

That is what o.Map do

[samber]

FlatMap can return a None value.

Map always returns a Some value.

I don't see any error here 🤔.

I'm closing. Feel free to open it again for more questions!