MapGet

Map getter is IWriterToRef<(Map, Key), Value>.

IWriterToRef<(Dictionary<string, int>, string), int> mapGet;

Creating a writer

MapGet<Map, Key, Value> is default getter for IDictionary<K, V>.

IWriterToRef<(Dictionary<string, int>, string), int> mapGet = new MapGet<Dictionary<string, int>, string, int>();

Map.Create(mapType, keyType, valueType) and Map.Create(mapType) also create the writer.

IWriterToRef<(Dictionary<string, int>, string), int> mapGet =
    (IWriterToRef<(Dictionary<string, int>, string), int>)
    MapGet.Create(typeof(Dictionary<string, int>));

Map get be adapted from delegate.

IWriterToRef<(Dictionary<string, int>, string), int> mapGet =
    DelegateWriter.Writer<(Dictionary<string, int>, string), int>(
        ((Dictionary<string, int> map, string key) args, ref int value) =>
        args.map.TryGetValue(args.key, out value)
    );

MapGetRequest(Type) is a request to build a map get writer.

MapGetRequest mapRequest = new MapGetRequest(typeof(Dictionary<string, int>));
IWriterToRef<(Dictionary<string, int>, string), int> mapGet =
    AccessorServices.Instance
    .GetRequired<MapGetRequest, IWriterToRef<(Dictionary<string, int>, string), int>>(mapRequest);

Usage

Writer gets value at key.

Dictionary<string, int> map = new Dictionary<string, int> { { "A", 1 }, { "B", 2 }, { "C", 3 } };
int value = mapGet.Read((map, "B"));

Full Example

Full example

using System.Collections.Generic;
using Avalanche.Accessor;
using Avalanche.Accessor.Map;
using Avalanche.Writer;

public class mapget
{
    public static void Run()
    {
        {
#pragma warning disable CS0168
            // <01>
            IWriterToRef<(Dictionary<string, int>, string), int> mapGet;
            // </01>
#pragma warning restore CS0168
        }
        {
            // <10>
            IWriterToRef<(Dictionary<string, int>, string), int> mapGet = new MapGet<Dictionary<string, int>, string, int>();
            // </10>
            Dictionary<string, int> map = new Dictionary<string, int> { { "A", 1 }, { "B", 2 }, { "C", 3 } };
            int value = mapGet.Read((map, "B"));
        }
        {
            // <11>
            IWriterToRef<(Dictionary<string, int>, string), int> mapGet =
                (IWriterToRef<(Dictionary<string, int>, string), int>)
                MapGet.Create(typeof(Dictionary<string, int>));
            // </11>
            Dictionary<string, int> map = new Dictionary<string, int> { { "A", 1 }, { "B", 2 }, { "C", 3 } };
            int value = mapGet.Read((map, "B"));
        }
        {
            // <12>
            IWriterToRef<(Dictionary<string, int>, string), int> mapGet =
                DelegateWriter.Writer<(Dictionary<string, int>, string), int>(
                    ((Dictionary<string, int> map, string key) args, ref int value) =>
                    args.map.TryGetValue(args.key, out value)
                );
            // </12>
            Dictionary<string, int> map = new Dictionary<string, int> { { "A", 1 }, { "B", 2 }, { "C", 3 } };
            int value = mapGet.Read((map, "B"));
        }

        {
            // <16>
            MapGetRequest mapRequest = new MapGetRequest(typeof(Dictionary<string, int>));
            IWriterToRef<(Dictionary<string, int>, string), int> mapGet =
                AccessorServices.Instance
                .GetRequired<MapGetRequest, IWriterToRef<(Dictionary<string, int>, string), int>>(mapRequest);
            // </16>
            Dictionary<string, int> map = new Dictionary<string, int> { { "A", 1 }, { "B", 2 }, { "C", 3 } };
            int value = mapGet.Read((map, "B"));
        }

        {
            IWriterToRef<(Dictionary<string, int>, string), int> mapGet = new MapGet<Dictionary<string, int>, string, int>();

            // <21>
            Dictionary<string, int> map = new Dictionary<string, int> { { "A", 1 }, { "B", 2 }, { "C", 3 } };
            int value = mapGet.Read((map, "B"));
            // </21>
        }
    }

}