[whatwg] canvas 2d's ellipse
ian at hixie.ch
Tue Sep 17 11:31:58 PDT 2013
On Tue, 17 Sep 2013, Tab Atkins Jr. wrote:
> > I'm not a fan of "sweep it under the carpet" bug handling, personally.
> > checking, etc. So many bugs that should be caught at compile time, or
> > at least at runtime when the code is reached, are instead caught only
> > after careful testing.
> "Runtime when the code is reached" often actually means "Whoops! Now the
> entire app's broken because I forgot to handle a silly edge-case.".
> When there's an easy and obvious recovery strategy, it's often much
> friendlier to authors to take it rather than force them to handle
Usually in these cases the entire app is probably still broken -- maybe
with data corruption, even, or with confusingly bad behaviour. The only
difference is that you have no idea where to begin looking.
It wouldn't be so bad if we had a way to have errors that allowed the code
to continue anyway, the way we do e.g. in HTML parsing, where you can
easily run a validator to find out what you've done wrong, while still
having the errors swept under the carpet on the user's end.
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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