obs-studio/libobs-metal/Sequence+Hashable.swift
2025-09-04 17:58:27 -04:00

26 lines
1.2 KiB
Swift

/******************************************************************************
Copyright (C) 2024 by Patrick Heyer <PatTheMav@users.noreply.github.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
extension Sequence where Iterator.Element: Hashable {
/// Filters a `Sequence` to only contain its unique elements, retaining order for unique elements.
/// - Returns: Filtered `Sequence` with unique elements of original `Sequence`
func unique() -> [Iterator.Element] {
var seen: Set<Iterator.Element> = []
return filter { seen.insert($0).inserted }
}
}