mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-05-31 22:58:32 +00:00
c36f9ac37b
* [feature] Account alias / move API + db models * go fmt * fix little cherry-pick issues * update error checking, formatting * add and use new util functions to simplify alias logic
64 lines
1.6 KiB
Go
64 lines
1.6 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package util
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// Deduplicate deduplicates entries in the given slice.
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func Deduplicate[T comparable](in []T) []T {
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var (
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inL = len(in)
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unique = make(map[T]struct{}, inL)
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deduped = make([]T, 0, inL)
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)
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for _, v := range in {
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if _, ok := unique[v]; ok {
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// Already have this.
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continue
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}
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unique[v] = struct{}{}
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deduped = append(deduped, v)
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}
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return deduped
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}
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// DeduplicateFunc deduplicates entries in the given
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// slice, using the result of key() to gauge uniqueness.
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func DeduplicateFunc[T any, C comparable](in []T, key func(v T) C) []T {
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var (
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inL = len(in)
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unique = make(map[C]struct{}, inL)
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deduped = make([]T, 0, inL)
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)
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for _, v := range in {
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k := key(v)
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if _, ok := unique[k]; ok {
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// Already have this.
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continue
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}
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unique[k] = struct{}{}
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deduped = append(deduped, v)
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}
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return deduped
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}
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