| 1 | // Package collect provides generic collection types, lazy iterators, and |
| 2 | // slice helpers. |
| 3 | package collect |
| 4 | |
| 5 | // Tuple2 is a generic pair of values. |
| 6 | type Tuple2[T1 any, T2 any] struct { |
| 7 | first T1 |
| 8 | second T2 |
| 9 | } |
| 10 | |
| 11 | // NewTuple2 creates a [Tuple2] holding first and second. |
| 12 | func NewTuple2[T1 any, T2 any](first T1, second T2) Tuple2[T1, T2] { |
| 13 | return Tuple2[T1, T2]{first: first, second: second} |
| 14 | } |
| 15 | |
| 16 | // First returns the first element of the pair. |
| 17 | func (t *Tuple2[T1, T2]) First() T1 { return t.first } |
| 18 | |
| 19 | // Second returns the second element of the pair. |
| 20 | func (t *Tuple2[T1, T2]) Second() T2 { return t.second } |
| 21 | |
| 22 | // Values returns both elements of the pair. |
| 23 | func (t *Tuple2[T1, T2]) Values() (T1, T2) { return t.first, t.second } |
| 24 | |
| 25 | // Tuple3 is a generic triple of values. |
| 26 | type Tuple3[T1 any, T2 any, T3 any] struct { |
| 27 | first T1 |
| 28 | second T2 |
| 29 | third T3 |
| 30 | } |
| 31 | |
| 32 | // NewTuple3 creates a [Tuple3] holding first, second, and third. |
| 33 | func NewTuple3[T1 any, T2 any, T3 any](first T1, second T2, third T3) Tuple3[T1, T2, T3] { |
| 34 | return Tuple3[T1, T2, T3]{first: first, second: second, third: third} |
| 35 | } |
| 36 | |
| 37 | // First returns the first element of the triple. |
| 38 | func (t *Tuple3[T1, T2, T3]) First() T1 { return t.first } |
| 39 | |
| 40 | // Second returns the second element of the triple. |
| 41 | func (t *Tuple3[T1, T2, T3]) Second() T2 { return t.second } |
| 42 | |
| 43 | // Third returns the third element of the triple. |
| 44 | func (t *Tuple3[T1, T2, T3]) Third() T3 { return t.third } |
| 45 | |
| 46 | // Values returns all three elements of the triple. |
| 47 | func (t *Tuple3[T1, T2, T3]) Values() (T1, T2, T3) { return t.first, t.second, t.third } |
| 48 | |