Problem understanding "foreach"

Questions & Answers
1

I am making a pathfinding script for my AI but i need to understand something about the foreach loop because i think it is causing my script to cause problems.
I want to know if the return is activated after the for loop has searched all of the tiles or does it return after each iteration of the loop?
Example:

foreach(Tile tile in AllTiles){

    closestTile = tile;
}


return closestTile;

And here is my actual script:

Tile GetTileValues(){


		float minFvalue = Mathf.Infinity;
		Tile candidate = null;

		foreach(Tile t in open){


			//return abs(toCoord.x - fromCoord.x) + abs(toCoord.y - fromCoord.y);
			float hValue = 	Mathf.Abs(endTile.transform.position.x -
			                       t.transform.position.x +
			             	Mathf.Abs(endTile.transform.position.y - 
			          			   t.transform.position.y));

			float gValue = 	Mathf.Abs(startTile.transform.position.x -
			                        t.transform.position.x +
			                Mathf.Abs(startTile.transform.position.y - 
			          				t.transform.position.y));

			float fValue = gValue + hValue;

			if(fValue < minFvalue){

				minFvalue = fValue;
				candidate = t;

			}
		}

		open.Remove(candidate);

		if(!closed.Contains(candidate)){
			
			closed.Add(candidate);
		}

		return candidate;

	}
2

of cause your “return closestTile;” will execute only after “foreach” loop have processed all elements in “AllTiles”.

Only “yield return” could interrupt loop’s execution after each iteration, but this very different case.