On Wed, Sep 24, 2014 at 2:56 PM, Brendan Eich <[email protected]> wrote: > Brendan Eich wrote: >> >> Tab Atkins Jr. wrote: >>> >>> This works great as a general principle, but honestly tons of >>> languages have already forged this path. It's pretty straightforward, >>> I think. >> >> >> I made the case for building it in sooner, but TC39 wanted "less sooner" >> based on library usage. There was a minority position (as voiced; could be >> majority) that argued JS is different, object detection plus optional >> "fields" means this is the wrong direction. > > Not trying to be controversial ;-). Would you use ES6 classes and have the > ones you wrote all extend NoSuchPropertyClass?
Using subclassing to bung in some arbitrary trait is really terrible. :/ It requires either adding it up high in your class hierarchy, or having to write a custom NoSuchPropertyClass which extends your superclass, so you can then extend it. I'm rather surprised that the group actually considered that sort of code to be appropriate - it's known that it doesn't compose well with other traits-as-superclasses or normal subclassing. ~TJ _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
