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|
package set
import (
"iter"
"maps"
)
// FIXME:
// - Docstrings
// - This should be in a public library somewhere
type Set[E comparable] struct {
m map[E]struct{}
}
func New[E comparable]() *Set[E] {
return &Set[E]{
m: map[E]struct{}{},
}
}
func NewWithValues[E comparable](values ...E) *Set[E] {
s := New[E]()
for _, v := range values {
s.Add(v)
}
return s
}
func (s *Set[E]) Add(v E) {
s.m[v] = struct{}{} // Possibly writing the same struct{}{} presence marker again.
}
func (s *Set[E]) AddSeq(seq iter.Seq[E]) {
for v := range seq {
s.Add(v)
}
}
func (s *Set[E]) Delete(v E) {
delete(s.m, v)
}
func (s *Set[E]) Contains(v E) bool {
_, ok := s.m[v]
return ok
}
func (s *Set[E]) Empty() bool {
return len(s.m) == 0
}
func (s *Set[E]) All() iter.Seq[E] {
return maps.Keys(s.m)
}
|
