On Wed, Mar 13, 2013 at 2:26 PM, Joshua Holbrook <[email protected]>wrote:
> > Why would you ever allow indeterminate, unsafe, or code that causes your
> vm
> > to implement runtime hacks to work around it to run at all?
> > Just because the code would run without throwing an exception doesn't
> mean
> > that it worked.
>
> Yeah but I've been using that (hypothetical) code for ages and never
> had a problem with it. Plus, the unit tests pass. Solid empirical data
> is more than enough for me.
>
> > In my mind "working" code is code that runs the same way every time
> without
> > ambiguity of execution or intent.
>
> AFAIK 'non-strict' code can and does run the same way every time
> without ambiguity of execution or intent. Especially when it's been
> used in production and has a reasonable test suite. I find these
> things more compelling than knowing that the code only used some
> "safe" subset of the language.
if (thisthing) {
function doStuff() {
console.log('never');
}
} else {
function doStuff() {
console.log('always');
}
}
If you have good unit tests, you'd find out that that code doesn't run
properly. Otherwise, you might not.
I'm going to go back to the newbie argument.
Most people using JavaScript aren't intimately familiar with all of the
bugs and workarounds. Why make it harder if it's easy to make it easier?
(from my experience it's also true that most people also aren't great at
writing great unit tests)
ES5 was created for a variety of reasons. One of them was to make
JavaScript easier!
AJ ONeal
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