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Why does C # generate garbage when using structure as a universal dictionary key?

I have a general dictionary as struct as key and a class reference as a value.

Dictionary<IntVector2, SpriteRenderer> tileRendererMap;

I get a link to render via coordinates and change it like this:

tileRendererMap[tileCoord].color = Color.cyan;

This generates 0.8 Kbytes of garbage every time I use it. Is this the default behavior? I would think that finding a dictionary would be one of the most interesting things. I need to find a way around this, as I work on a mobile platform, and this is a critical system.

Any ideas what I can do wrong or how to get free viewing access?

Edit after testing:

Using an int key instead of my custom structure works as expected. No allocation, no problem, and I don't find it strange to use an identifier as a key. However, for my game, I want to save the rendering associated with a certain tile in the grid, which in fact should not be an object of any type, because I care only about the position of the grid. Therefore, I thought IntVector2 might be a practical identifier, but I could get around it if I had to.

, Unity3D Profiler. 0.8KB Dictionary_get_item, DefaultComparer.Equals(). -, /, , - , , .

:

public struct IntVector2
{
    public int x, y;

    public override bool Equals(object obj)
    {
        if (obj == null || obj is IntVector2 == false)
            return false;

        var data = (IntVector2)obj;
        return x == data.x && y == data.y;
    }

    public override int GetHashCode()
    {
        return x.GetHashCode() ^ y.GetHashCode();
    }
}

:

dictionar.

public struct IntVector2 : IEquatable<IntVector2>
{
    public int x;
    public int y;

    public IntVector2(int x, int y)
    {
        this.x = x;
        this.y = y;
    }

    public bool Equals(IntVector2 other)
    {
        return x == other.x && y == other.y;
    }
}

Dictionary IEquatable , Equals, .

+4
2

Equals IEquatable<IntVector2>, , , Equals object.

IEquatable<IntVector2>, ( ) Equals, IntVector2, .

+8

IntVector2 - struct. , struct ? , struct - , , , .

, .

public struct IntVector2
{
  string key;
}

, ,

Dictionary<string, SpriteRenderer> tileRendererMap;

Intvector2 iv2 = new Intvector2();
iv2.key = "test";

tileRendererMap = new Dictionary<string, SpriteRenderer>();
tileRendererMap.Add(iv2.key, new SpriteRenderer{prop1 = value});
0

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