slice is a simple Go package to provide generic versions of Map, Reduce and
Filter on slices. I mainly wrote it as an exercise to get more familar with
Go 1.18's new type parameterization feature, but decided to publish it in case
it is useful for others.
package main
import (
"fmt"
"math"
"github.com/akrennmair/slice"
)
func main() {
someNumbers := []float64{1.0, 2.0, 4.0, 23.5, 42.9}
fmt.Printf("sqrt(%v) = %v\n", someNumbers, slice.Map(someNumbers, func(v float64) float64 {
return math.Sqrt(v)
}))
someStrings := []string{"hello", "to", "the", "golang", "community"}
fmt.Printf("len(%v) = %v\n", someStrings, slice.Map(someStrings, func(s string) int {
return len(s)
}))
fmt.Printf("total length: %d\n", slice.Reduce(slice.Map(someStrings, func(s string) int {
return len(s)
}), func(acc, i int) int {
return acc + i
}))
moreNumbers := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
fmt.Printf("even numbers: %v\n", slice.Filter(moreNumbers, func(i int) bool {
return i%2 == 0
}))
}An additional package github.com/akrennmair/slice/channel is also provided that contains
Map, Reduce and Filter functions that operate on chans.
- Andreas Krennmair [email protected]
See the file LICENSE for license information.