[GitHub] [royale-compiler] joshtynjala edited a comment on issue #73: Abstract classes in ActionScript

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joshtynjala edited a comment on issue #73: Abstract classes in ActionScript
URL: https://github.com/apache/royale-compiler/issues/73#issuecomment-457240456
 
 
   ## Bytecode
   
   In SWF bytecode, the class compiles with `[RoyaleAbstract]` metadata instead:
   
   ``` actionscript
   package com.example
   {
   	[RoyaleAbstract]
   	public class MyAbstractClass
   	{
   		public function MyAbstractClass()
   		{
   			
   		}
   	}
   }
   ```
   
   The compiler is smart enough to look for this metadata to determine if a class from a compiled SWC file is abstract or not.
   
   In fact, if you didn't want to use the new `abstract` keyword, you could add this metadata instead. This would be useful for developers that are still using IDEs that don't understand the `abstract` keyword. Especially if the IDE has its own syntax error checking that doesn't rely on the compiler.

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