golang_type_helpers.go

package helpers

import "github.com/jinzhu/copier"

func stringInSlice(slice []string, str string) bool {
	for _, item := range slice {
		if item == str {
			return true
		}
	}
	return false
}

func slicesIntersect(s1, s2 []string) bool {
	hash := make(map[string]bool)
	for _, e := range s1 {
		hash[e] = true
	}
	for _, e := range s2 {
		if hash[e] {
			return true
		}
	}
	return false
}

func subtractStringSlices(allElements []string, elementsToRemove []string) []string {
	newList := []string{}
	for _, element := range allElements {
		if !stringInSlice(elementsToRemove, element) {
			newList = append(newList, element)
		}
	}
	return newList
}

func appendSet(input []string, stringsToAppend ...string) []string {
	output := []string{}
	copier.Copy(&output, &input)
	for _, s := range stringsToAppend {
		if !stringInSlice(output, s) {
			output = append(output, s)
		}
	}
	return output
}