On Aug 23, 2008, at 11:30 AM, Sam Ruby wrote: > [EMAIL PROTECTED] wrote: >> On Sat, Aug 23, 2008 at 10:04 AM, Sam Ruby <[EMAIL PROTECTED]> >> wrote: >>> Decimal implemented as a library would be sufficient for a 3.1 >>> release. The problem is an interoperable definition for what infix >>> operators is required for completeness. Taking no other action, the >>> default behavior for the result of a "+" operator given a Number >>> and a >>> library provided Decimal would be to convert both to string >>> representations and concatenate the results. >> >> In other words, the same as the "+" operator given a Number and a >> library provided Employee, Document, PopupWidget, ..., or any other >> user defined type. > > Having Decimal.parse(2) + 3 produce "23" is not what I would call > "fail > fast", as that is a term I would typically use for throwing an > exception > or the like.
One possible way to achieve "fail fast" in a library only solution would be to specify that Decimal.prototype.valueOf always throws an exception. This would make an attempt to add or multiply using the operator throw, but would still allow decimal numbers to be printed, and would allow for explicit conversion methods. Regards, Maciej _______________________________________________ Es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
