GoToSocial/internal/util/unique.go

48 lines
1.4 KiB
Go

/*
GoToSocial
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package util
import "net/url"
// UniqueStrings returns a deduplicated version of a given string slice.
func UniqueStrings(s []string) []string {
keys := make(map[string]bool, len(s))
list := []string{}
for _, entry := range s {
if _, value := keys[entry]; !value {
keys[entry] = true
list = append(list, entry)
}
}
return list
}
// UniqueURIs returns a deduplicated version of a given *url.URL slice.
func UniqueURIs(s []*url.URL) []*url.URL {
keys := make(map[string]bool, len(s))
list := []*url.URL{}
for _, entry := range s {
if _, value := keys[entry.String()]; !value {
keys[entry.String()] = true
list = append(list, entry)
}
}
return list
}