com.unity.uiwidgets/Samples/ReduxSample/ObjectFinder/Middleware.cs

using System.Linq;
using UnityEngine;

namespace Unity.UIWidgets.Sample.Redux.ObjectFinder {
    public class GameFinderMiddleware {
        public static Middleware<FinderAppState> Create() {
            return (store) => (next) => (action) => {
                if (action is SearchAction) {
                    var searchAction = (SearchAction) action;
                    var objects = Object.FindObjectsOfType(typeof(FinderGameObject)).Where((obj) => {
                        return searchAction.keyword == "" ||
                               obj.name.ToUpper().Contains(searchAction.keyword.ToUpper());
                    }).Select(obj => new GameObjectInfo {id = obj.GetInstanceID(), name = obj.name}).ToList();

                    var result = next(action);
                    store.Dispatch(new SearchResultAction() {keyword = searchAction.keyword, results = objects});
                    return result;
                }

                return next(action);
            };
        }
    }
}