Unity Array List Dictionary

Unity Array List Dictonary

1. Array

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;

public class Test : MonoBehaviour
{
    // 배열 선언 방법
    // 데이터형식[] 배열이름 = new 데이터형식[크기]
    public Item[] items = new Item[]
    {
        new Item(3, "carot"),
        new Item(2, "banana"),
        new Item(1, "apple"),
        new Item(4, "apple")
    };
    
    void Start()
    {
        Array.Sort(items, (x,y) => x.code.CompareTo(y.code));
        
        Array.ForEach(items, x => x.Print());

        bool b = Array.Exists(items, x => x.code == 3);
        print(b);

        bool b2 = Array.TrueForAll(items, x => x.code > 0);
        print(b2);

        Item item = Array.Find(items, x => x.name == "apple");
        item.Print();
        int index = Array.FindIndex(items, x => x.name == "apple");
        print(index);
        item = Array.FindLast(items, x => x.name == "apple");
        item.Print();
        index = Array.FindLastIndex(items, x => x.name == "apple");
        print(index);

        Item[] _items = Array.FindAll(items, x => x.name == "apple");
        Array.ForEach(_items, x => x.Print());

        // Item[] items_copy = items; // 얕은 복사
        Item[] items_copy = Array.ConvertAll(items, x => new Item(x.code, x.name)); // 깊은 복사
        items_copy[0].code = 100;
        Array.ForEach(items, x => x.Print());
        Array.ForEach(items_copy, x => x.Print());

        Array.Reverse(items);
        Array.Resize(ref items, 5);
    }
}

[Serializable]
public class Item
{
    public int code;
    public string name;

    public Item(int code, string name)
    {
        this.code = code;
        this.name = name;
    }
    public void Print()
    {
        Debug.Log($"code:{code}, name:{name}");
    }
}

2. List

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;

public class Test : MonoBehaviour
{
    // List 선언 방법
    // List<자료형> 변수명 = new List<자료형>();
    [SerializeField] List<Item> items = new List<Item>()
    {
        new Item(3, "carrot"),
        new Item(2, "banana"),
        new Item(1, "apple"),
        new Item(4, "apple")
    };
    
    void Start()
    {
        for(int i=0; i<items.Count; i++)
        {
            items[i].Print();
        }
        foreach(var item in items)
        {
            item.Print();
        }

        Item newitem = new Item(5, "watermelon");
        items.Add(newitem);
        
        bool b = items.Remove(newitem);
        print(b);
        
        items.RemoveAt(1);
        
        int count = items.RemoveAll(x => x.code > 2);
        print(count);

        items.Insert(1, new Item(5, "watermelon"));

        items.Sort((x,y) => x.code.CompareTo(y.code));

        bool b2 = items.Exists(x => x.name == "carrot");
        print(b2);

        bool b3 = items.TrueForAll(x => x.code > 0);
        print(b3);

        //List<Item> itemscopy = items; // 얕은 복사
        List<Item> itemscopy = items.ConvertAll(x => new Item(x.code, x.name)); // 깊은 복사
        itemscopy[0].code = 100;
        itemscopy.ForEach(x => x.Print());

        Item itemf = items.Find(x => x.name == "apple");
        itemf.Print();

        int indexf = items.FindIndex(x => x.name == "apple");
        print(indexf);

        itemf2 = items.FindLast(x => x.name == "apple");
        itemf2.Print();

        List<Item> items2 = items.FindAll(x => x.code > 2);
        items2.ForEach(x => x.Print());

        Item[] itemArray = items.ToArray(); // List -> Array
        List<Item> lst = new List<Item>(itemArray); // Array -> List
        Array.ForEach(itemArray, x => x.Print());
    }
}

[Serializable]
public class Item
{
    public int code;
    public string name;

    public Item(int code, string name)
    {
        this.code = code;
        this.name = name;
    }
    public void Print()
    {
        Debug.Log($"code:{code}, name:{name}");
    }
}

3. Dictionary

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;

public class Test : MonoBehaviour
{
    Dictionary<string, Item> items = new Dictionary<string, Item>()
    {
        {"banana", new Item(2, "banana")},
        {"apple", new Item(1, "apple")}
    };
    void Start()
    {
        foreach(var keyValue in items)
        {
            print(keyValue.Key);
            keyValue.Value.Print();
        }
        

        bool b = items.ContainsKey("apple");
        print(b);

        Item _item = new Item(3, "carrot");
        items.Add("carrot", _item);
        bool b2 = items.ContainsValue(_item);
        print(b2);

        if(items.TryGetValue("apple", out Item _item2))
        {
            _item2.Print();
        }
    }
}

[Serializable]
public class Item
{
    public int code;
    public string name;

    public Item(int code, string name)
    {
        this.code = code;
        this.name = name;
    }
    public void Print()
    {
        Debug.Log($"code:{code}, name:{name}");
    }
}