new generic functions type

[mortezakhademan]

Hello
Why you don't implement generic functions like this:

package main

import "fmt"

func main() {
	i := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
	i2 := from(i).where(func(i int) bool {
		return i%2 == 0
	})
	fmt.Println(i2)
}

func from[T any](a []T) *q[T] {
	q := &q[T]{}
	q.list = a
	return q
}

type q[T any] struct {
	list []T
}

func (a *q[T]) where(f1 func(T) bool) []T {
	var result []T
        // this is just for sample, you can return type of q struct 
	for _, l := range a.list {
		if f1(l) {
			result = append(result, l)
		}
	}
	return result
}

[ahmetb]

See #96.
Sadly the current Go generics does not allow method chaining like From().Select().Where().... The only feasible approach is Where(From()).Select() type of method composition which isn't the point of this library. There are alternative libraries that let you go that path.