Method LRem

internal/data/list.go:365–377

LRem removes the first count occurrences of elements equal to value from the list stored at key. The count argument influences the operation in the following ways: count > 0: Remove elements equal to value moving from head to tail. count < 0: Remove elements equal to value moving from tail to head.

(key string, count int, cmp func(r *core.Record) (bool, error))

// count < 0: Remove elements equal to value moving from tail to head.
// count = 0: Remove all elements equal to value.
func (l *List) LRem(key string, count int, cmp func(r *core.Record) (bool, error)) error {
	removeIndexes, err := l.GetRemoveIndexes(key, count, cmp)
	if err != nil {
		return err
	}

	list := l.Items[key]
	for _, idx := range removeIndexes {
		list.Delete(idx)
	}

	return nil
}

// LTrim trim an existing list so that it will contain only the specified range of elements specified.
func (l *List) LTrim(key string, start, end int) error {