public sealed override void RemoveAll(IEnumerable <T> enumer)
{
this.Modify(
() => this.RemoveAllImpl(enumer),
() => ListEventArgs.NewEventRemoveRange(enumer.Select(this.IndexOf), enumer));
}
public sealed override void RemoveAt(int index)
{
this.Modify(
() => this.RemoveAtImpl(index),
() => ListEventArgs.NewEventRemoveRange(new[] { index }, new[] { this[index] }));
}
public sealed override void RemoveAll(int index, int count)
{
this.Modify(
() => this.RemoveAllImpl(index, count),
() => ListEventArgs.NewEventRemoveRange(index, Enumerable.Range(index, count).Select(i => this[i])));
}
