| // Copied from source at github.com/kseo/tuple/blob/470ed3aeb/lib/src/tuple.dart |
| |
| // Original copyright: |
| // Copyright (c) 2014, the tuple project authors. Please see the AUTHORS |
| // file for details. All rights reserved. Use of this source code is governed |
| // by a BSD-style license that can be found in the LICENSE file. |
| |
| import 'package:quiver/core.dart'; |
| |
| /// Represents a 2-tuple, or pair. |
| class Tuple2<T1, T2> { |
| /// Returns the first item of the tuple |
| final T1 item1; |
| |
| /// Returns the second item of the tuple |
| final T2 item2; |
| |
| /// Creates a new tuple value with the specified items. |
| const Tuple2(this.item1, this.item2); |
| |
| @override |
| String toString() => '[$item1, $item2]'; |
| |
| @override |
| bool operator ==(o) => o is Tuple2 && o.item1 == item1 && o.item2 == item2; |
| |
| @override |
| int get hashCode => hash2(item1.hashCode, item2.hashCode); |
| } |
| |
| /// Represents a 3-tuple, or triple. |
| class Tuple3<T1, T2, T3> { |
| /// Returns the first item of the tuple |
| final T1 item1; |
| |
| /// Returns the second item of the tuple |
| final T2 item2; |
| |
| /// Returns the third item of the tuple |
| final T3 item3; |
| |
| /// Creates a new tuple value with the specified items. |
| const Tuple3(this.item1, this.item2, this.item3); |
| |
| @override |
| String toString() => '[$item1, $item2, $item3]'; |
| |
| @override |
| bool operator ==(o) => |
| o is Tuple3 && o.item1 == item1 && o.item2 == item2 && o.item3 == item3; |
| |
| @override |
| int get hashCode => hash3(item1.hashCode, item2.hashCode, item3.hashCode); |
| } |
| |
| /// Represents a 4-tuple, or quadruple. |
| class Tuple4<T1, T2, T3, T4> { |
| /// Returns the first item of the tuple |
| final T1 item1; |
| |
| /// Returns the second item of the tuple |
| final T2 item2; |
| |
| /// Returns the third item of the tuple |
| final T3 item3; |
| |
| /// Returns the fourth item of the tuple |
| final T4 item4; |
| |
| /// Creates a new tuple value with the specified items. |
| const Tuple4(this.item1, this.item2, this.item3, this.item4); |
| |
| @override |
| String toString() => '[$item1, $item2, $item3, $item4]'; |
| |
| @override |
| bool operator ==(o) => |
| o is Tuple4 && |
| o.item1 == item1 && |
| o.item2 == item2 && |
| o.item3 == item3 && |
| o.item4 == item4; |
| |
| @override |
| int get hashCode => |
| hash4(item1.hashCode, item2.hashCode, item3.hashCode, item4.hashCode); |
| } |