jackhammer

Utilities for Go
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slice.go (979B)

      1 package syncx
      2 
      3 import (
      4 	"iter"
      5 	"slices"
      6 )
      7 
      8 // Slice is a mutex protected slice.
      9 type Slice[T any] struct {
     10 	Value Mutex[[]T]
     11 }
     12 
     13 func (s *Slice[T]) Append(v T) {
     14 	s.Value.Update(func(list []T) []T {
     15 		return append(list, v)
     16 	})
     17 }
     18 
     19 func (s *Slice[T]) Prepend(v T) {
     20 	s.Value.Update(func(list []T) []T {
     21 		return append([]T{v}, list...)
     22 	})
     23 }
     24 
     25 func (s *Slice[T]) Delete(start, end int) {
     26 	s.Value.Update(func(list []T) []T {
     27 		return slices.Delete(list, start, end)
     28 	})
     29 }
     30 
     31 func (s *Slice[T]) Contains(fn func(T) bool) bool {
     32 	return s.Index(fn) > -1
     33 }
     34 
     35 func (s *Slice[T]) Index(fn func(T) bool) int {
     36 	_, ii := s.Find(fn)
     37 	return ii
     38 }
     39 
     40 func (s *Slice[T]) Find(fn func(T) bool) (T, int) {
     41 	for ii, v := range s.Iter() {
     42 		if fn(v) {
     43 			return v, ii
     44 		}
     45 	}
     46 	return *new(T), -1
     47 }
     48 
     49 func (s *Slice[T]) Iter() iter.Seq2[int, T] {
     50 	return func(yield func(int, T) bool) {
     51 		s.Value.With(func(list []T) {
     52 			for ii, v := range list {
     53 				if !yield(ii, v) {
     54 					break
     55 				}
     56 			}
     57 		})
     58 	}
     59 }