On Aug 25, 2008, at 5:25 PM, Waldemar Horwat wrote: > Brendan Eich wrote: >>> - Should decimal values behave as objects (pure library >>> implementation) or as primitives? >>> >>> If they behave as objects, then we'd get into situations such as >>> 3m != >>> 3m in some cases and 3m == 3m in other cases. Also, -0m != 0m would >>> be necessary. This is clearly unworkable. >> >> What should be the result of (typeof 3m)? > > "decimal". It should not be "object" because it doesn't behave > like other objects!
Ok, good (not "number"), but still a scary thing to contemplate if your code switches on typeof and believes it handles all cases based on ES1-3. > Not doing option 2a or 2b would make it hard to write generic > methods, it would mean that you could use decimals to index arrays > but not pass them to Array.prototype methods (unless we made those > special as well), etc. Good point. Alternative 1 is really only for decimal-specific code. Generic arithmetic wins if we can agree on 2a or 2b. > I'm off to Burning Man! I'll continue this discussion next week. Have fun! /be _______________________________________________ Es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
