ListClear

List clear writer is an IWriter<Void, List> implementation for classes and IWriterToRef<Void, List> for structs.

IWriter<Avalanche.Void, List<int>> listClear;

Creating a writer

ListClear<List, Element> is default list writer for IList<T> implementing classes and structs.

IWriter<Avalanche.Void, List<int>> listClear = new ListClear<List<int>, int>();

List.Create(listType, elementType) also creates the writer.

IWriter<Avalanche.Void, List<int>> listClear =
    (IWriter<Avalanche.Void, List<int>>)
    ListClear.Create(typeof(List<int>), typeof(int));

List clear can adapted from delegate.

IWriter<Avalanche.Void, List<int>> listClear = DelegateWriter.Invoke<List<int>>(list => list.Clear());

ListClearRequest(Type) is a request to build a list clear writer.

ListClearRequest listRequest = new ListClearRequest(typeof(List<int>));
IWriter<Avalanche.Void, List<int>> listClear =
    AccessorServices.Instance
    .GetRequired<ListClearRequest, IWriter<Avalanche.Void, List<int>>>(listRequest);

Usage

Writer clears list.

List<int> list = new List<int> { 1, 2, 3 };
listClear.Write(default, list);

A ref must be used when accessing a value-typed list on stack.

// Create writer
IWriterToRef<Avalanche.Void, StructList4<int>> listClear =
    (IWriterToRef<Avalanche.Void, StructList4<int>>)
    ListClear.Create(typeof(StructList4<int>));
// Create list
StructList4<int> list = new StructList4<int> { 1, 2, 3 };
// Clear list
listClear.Write(default, ref list);

.TypeCast<Void, Object>().Write() be used when accessing a value-typed list in heap.

// Create writer
IWriterToRef<Avalanche.Void, StructList4<int>> listClear =
    (IWriterToRef<Avalanche.Void, StructList4<int>>)
    ListClear.Create(typeof(StructList4<int>));
// Create list
StructList4<int> list = new StructList4<int> { 1, 2, 3 };
// Copy to heap
object box = list;
// Clear list
listClear.TypeCast<Avalanche.Void, object>().Write(default, box);

Full Example

Full example

using System.Collections.Generic;
using Avalanche.Accessor;
using Avalanche.Accessor.List;
using Avalanche.Utilities;
using Avalanche.Writer;

public class listclear
{
    public static void Run()
    {
        {
#pragma warning disable CS0168
            // <01>
            IWriter<Avalanche.Void, List<int>> listClear;
            // </01>
#pragma warning restore CS0168
        }
        {
            // <10>
            IWriter<Avalanche.Void, List<int>> listClear = new ListClear<List<int>, int>();
            // </10>
            List<int> list = new List<int> { 1, 2, 3 };
            listClear.Write(default, list);
        }
        {
            // <11>
            IWriter<Avalanche.Void, List<int>> listClear =
                (IWriter<Avalanche.Void, List<int>>)
                ListClear.Create(typeof(List<int>), typeof(int));
            // </11>
            List<int> list = new List<int> { 1, 2, 3 };
            listClear.Write(default, list);
        }
        {
            // <12>
            IWriter<Avalanche.Void, List<int>> listClear = DelegateWriter.Invoke<List<int>>(list => list.Clear());
            // </12>
            List<int> list = new List<int> { 1, 2, 3 };
            listClear.Write(default, list);
        }

        {
            // <16>
            ListClearRequest listRequest = new ListClearRequest(typeof(List<int>));
            IWriter<Avalanche.Void, List<int>> listClear =
                AccessorServices.Instance
                .GetRequired<ListClearRequest, IWriter<Avalanche.Void, List<int>>>(listRequest);
            // </16>
            List<int> list = new List<int> { 1, 2, 3 };
            listClear.Write(default, list);
        }

        {
            IWriter<Avalanche.Void, List<int>> listClear = new ListClear<List<int>, int>();

            // <21>
            List<int> list = new List<int> { 1, 2, 3 };
            listClear.Write(default, list);
            // </21>
        }

        // Value List on stack
        {
            // <30>
            // Create writer
            IWriterToRef<Avalanche.Void, StructList4<int>> listClear =
                (IWriterToRef<Avalanche.Void, StructList4<int>>)
                ListClear.Create(typeof(StructList4<int>));
            // Create list
            StructList4<int> list = new StructList4<int> { 1, 2, 3 };
            // Clear list
            listClear.Write(default, ref list);
            // </30>
        }

        // Value List on heap
        {
            // <31>
            // Create writer
            IWriterToRef<Avalanche.Void, StructList4<int>> listClear =
                (IWriterToRef<Avalanche.Void, StructList4<int>>)
                ListClear.Create(typeof(StructList4<int>));
            // Create list
            StructList4<int> list = new StructList4<int> { 1, 2, 3 };
            // Copy to heap
            object box = list;
            // Clear list
            listClear.TypeCast<Avalanche.Void, object>().Write(default, box);
            // </31>
        }
    }

}