joshtynjala edited a comment on issue #207:
URL:
https://github.com/apache/royale-compiler/issues/207#issuecomment-1015864334
As I was writing that, I wondered if it would be clear enough using
`Object`, or if I should use more specific classes. I guess I should have been
more specific after all.
Let me fix that. This should be allowed:
```as3
var fun:Function.<(ev:MouseEvent):void> = function(ev:Event):void {};
```
I don't have the types backwards.
Consider the following, which is allowed in AS3 code that exists today:
```
function myListener(event:Event):void {}
myListener(new MouseEvent());
```
This is why `myListener` should be allowed to be assigned to `var
fun:Function.<(ev:MouseEvent):void>`. Because the type is `Event`, it can
accept any subclass, including `MouseEvent`..
Function types in Haxe and TypeScript both work how I describe. Here's a
TypeScript example:
```ts
let myListener1: (event: MouseEvent)=>void = function(event: Event) {} // no
problem!
let myListener2: (event: Event)=>void = function(event: MouseEvent) {} //
error!
```
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