koobas.hobune.stream
UnityScript self.ExampleList.get_(self a) cannot be assigned to
Hi everyone, I have an error in my Unityscript script and I not sure what is wrong. it says self.ExampleList.get_(self a) cannot be assigned to. Any idea how to fix it?
#pragma strict
import System.Collections.Generic;
var ExampleList:List.<int> = new List.<int>();
public var a:int;
function OnGUI(){
for ( a = 0; a <ExampleList.Count; a++)
if (GUILayout.Button("+", GUILayout.Width(50), GUILayout.Height(30)))
{
//self.ExampleList.get_(self a) cannot be assigned to
ExampleList[a]++;
}
for (var a = 0; a <ExampleList.Count; a++)
//there is already a variable named a.
for (var a = 0; a <ExampleList.Count; a++)
I guess Unityscript can't properly handle the indexer property of the list class when it comes to the post increment operator. Try this instead:
#pragma strict
import System.Collections.Generic;
var ExampleList:List.<int> = new List.<int>();
function OnGUI()
{
for (var a = 0; a < ExampleList.Count; a++)
{
if (GUILayout.Button("+", GUILayout.Width(50), GUILayout.Height(30)))
{
ExampleList[a] = ExampleList[a] + 1;
}
}
}
Btw: always use local variables for a for loop. A for loop variable should never be a member variable of a class.
A for loop initialized the variable everytime it's executed. So it makes no sense to store it in the class. Class members should have a meaning for the purpose of the class. Class variables occupies memory with you don't need in this case.
I have encountered something odd. If I declare a in the for loop and than declare it again I get this error. It Says that there is already a local variable named a. Is this suppose to happen? I can't post the code in the comments so I will edit my post and post it there.
@DangerousBeans: that's how JS handles scope. If you do "var a = 0" in the first loop, leave out var and make the second be just "a = 0". Code in comments works the same way as code in answers, namely 4 spaces in front of a line formats it as code. You can either do that manually or use the code format button in an answer and cut&paste the result into a comment.
@clunk47: I would suggest running Bunny83's script. Put the script on an object, add a few items to the list in the inspector, then start the scene. Click on the buttons and see what happens to the list items in the inspector.
