FilterList

Introduction

This script provides an API to search objects using filters.

Example

using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using Wonderland;

public class FilterListTest : MonoBehaviour {
    class Location : System.IEquatable<Location> {
        public string City = "Nantes";
        public string Region = "Loire-Atlantique";
        public string Country = "France";

        public bool Equals(Location loc) {
            return Country == loc.Country && Region == loc.Region && City == loc.City;
        }
    }

    void Start() {
        // my items
        int sword = 1;
        int armor = 2;
        int helmet = 3;
        int shield = 4;
        int potion = 5;

        ///////////////
        // simple filterlist myItemId + user name
        var myList = new FilterList<int, string>();

        myList.Set("Antoine", sword, armor, potion);
        myList.Set("Thomas", sword, armor, helmet);
        myList.Set("Thibault", sword, helmet, shield, potion);

        // tests (optimized get)
        Log("myList.Get(sword)", myList.Get(sword)); // {Antoine, Thomas, Thibault}
        Log("myList.Get(shield)", myList.Get(shield)); // {Thibault}
        Log("myList.Get(armor, helmet)", myList.Get(armor, helmet)); // {Antoine, Thomas, Thibault}

        ///////////////
        // Using IEquatable
        var myList2 = new FilterList<Location, string>();

        // my country database
        var city1 = new Location() {
            City = "Nantes",
            Region = "Loire-Atlantique",
            Country = "France"
        };
        var city2 = new Location() {
            City = "Nice",
            Region = "Alpes-Maritimes",
            Country = "France"
        };

        myList2.Set("Antoine", city1);
        myList2.Set("Thomas", city1);
        myList2.Set("Thibault", city2);

        Log("myList2.Get(city1)", myList2.Get(city1)); // {Antoine, Thomas}
        Log("myList2.Get(city2)", myList2.Get(city2)); // {Thibault}

        // create a new location with same values of the first
        var city3 = new Location() {
            City = "Nantes",
            Region = "Loire-Atlantique",
            Country = "France"
        };
        myList2.Set("Pierre", city3);

        // Use match to select with equals
        Log("myList2.Get(city1)", myList2.Get(city1)); // {Antoine, Thomas}
        Log("myList2.Match(city1)", myList2.Match(city1)); // {Antoine, Thomas, Pierre}
    }

    void Log(string title, IEnumerable<string> names) {
        print(title + " : {" + names.Aggregate((current, next) => current+", "+next) + "}");
    }
}

myList.Get(sword) : {Antoine, Thomas, Thibault}
myList.Get(shield) : {Thibault}
myList.Get(armor, helmet) : {Antoine, Thomas, Thibault}

myList2.Get(city1) : {Antoine, Thomas}
myList2.Get(city2) : {Thibault}

myList2.Get(city1) : {Antoine, Thomas}
myList2.Match(city1) : {Antoine, Thomas, Pierre}