EnsureUniqueAndAppend

func EnsureUniqueAndAppend[T comparable](slice []T, item T) []T

EnsureUniqueAndAppend appends an item to a slice if it does not already exists.

package main

import (
    "fmt"

    "github.com/Goldziher/go-utils/sliceutils"
)

func main() {
    slice := []string{}
    item := "go-utils"

    slice = sliceutils.EnsureUniqueAndAppend(slice, item) // ["go-utils"]
    slice = sliceutils.EnsureUniqueAndAppend(slice, item) // ["go-utils"]
}