[GitHub] joshtynjala opened a new issue #78: Assign to Boolean variable does not convert to true or false, breaking loose comparison with ==

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joshtynjala opened a new issue #78: Assign to Boolean variable does not convert to true or false, breaking loose comparison with ==
URL: https://github.com/apache/royale-compiler/issues/78
 
 
   Allowing boolean to store anything except `true` and `false` breaks loose comparison with the `==` operator. That's much more serious than breaking strict comparison with the `===` operator!
   
   ``` as3
   var obj:Object = {};
   var bool1:Boolean = obj;
   var bool2:Boolean = true;
   
   if(bool) //works
   {
   }
   
   if(bool1 == bool2) //fails!
   {
   }
   ```
   
   To coerce a value to boolean, we can use `!!` in JavaScript:
   
   ``` js
   var obj = {};
   var bool1 = !!obj; //true
   ```
   
   This coerces to `true` with any type of object, and also coerces to `false` for things like `null` and `undefined`.
   
   Initializing a boolean with another boolean (or an expression that resolves to boolean) doesn't require coercion.
   
   Additionally, similar to how `int` and `uint` default to `0` when there's no initializer, `Boolean` variables should default to `false` unless initialized with another value.

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