Re: Why Number(symbol) crashes?

2016-10-11 Thread Jordan Harband 
whoops, sorry, I missed the earlier thread. disregard.

On Tue, Oct 11, 2016 at 5:53 PM, Jordan Harband  wrote:

> I'm not sure what you're asking. `Number(Symbol())` throws a TypeError.
>
> Perhaps are you using a Symbol sham (that only partially is able to
> polyfill Symbols)?
>
> In what browser/engine are you seeing `NaN`?
>
> On Tue, Oct 11, 2016 at 11:37 AM, Raul-Sebastian Mihăilă <
> raul.miha...@gmail.com> wrote:
>
>> How is NaN useful? Isn't it better to be explicit if you really want a
>> string?
>>
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Re: Why Number(symbol) crashes?

2016-10-11 Thread Jordan Harband 
I'm not sure what you're asking. `Number(Symbol())` throws a TypeError.

Perhaps are you using a Symbol sham (that only partially is able to
polyfill Symbols)?

In what browser/engine are you seeing `NaN`?

On Tue, Oct 11, 2016 at 11:37 AM, Raul-Sebastian Mihăilă <
raul.miha...@gmail.com> wrote:

> How is NaN useful? Isn't it better to be explicit if you really want a
> string?
>
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>
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Why Number(symbol) crashes?

2016-10-11 Thread Raul-Sebastian Mihăilă 
How is NaN useful? Isn't it better to be explicit if you really want a
string?
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Re: Why Number(symbol) crashes?

2016-10-11 Thread Oriol Bugzilla 
In my opinion it's a bit incoherent that each object-coercible type behaves 
differently when coercing symbols to it.

Symbols can be explicitly coerced to strings, but not implicitly:

```js
String(Symbol("abc")); // "Symbol(abc)"
Symbol("abc") + ""; // TypeError
```

Symbols can't be coerced to numbers, neither explicitly nor implicitly:

```js
Number(Symbol("abc")); // TypeError
+Symbol("abc"); // TypeError
```

Symbols can be coerced to booleans, both explicitly and implicitly:

```js
Boolean(Symbol("abc")); // true
!!Symbol("abc"); // true
```

Maybe the `Number` constructor could behave analogous to `String` and return 
`NaN` for symbols, instead of calling ToNumber.


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Re: Why Number(symbol) crashes?

2016-10-11 Thread Kris Siegel 
Symbol is such an oddball; similar to this if you do Symbol() + "" it will
also throw an exception unlike all other built-ins. Granted I have no idea
what a string representation of Symbol *really* would be but no other built
in type behaves the way Symbol does.

I do think Number(Symbol()) should return NaN though. I'd like to know why
this didn't happen.



On Tue, Oct 11, 2016 at 2:07 AM, medikoo 
wrote:

> I was searching the archived but wasn't able to find the answer.
>
> What's the reasoning behind having Number(symbol) crash instead of
> returning
> NaN (as it's in case all other non-coercible values?). It feels not
> consistent.
>
> If someone can point me to some discussion that provided the reasoning I'd
> be grateful
>
>
>
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Why Number(symbol) crashes?

2016-10-11 Thread medikoo 
I was searching the archived but wasn't able to find the answer.

What's the reasoning behind having Number(symbol) crash instead of returning
NaN (as it's in case all other non-coercible values?). It feels not
consistent.

If someone can point me to some discussion that provided the reasoning I'd
be grateful



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http://mozilla.6506.n7.nabble.com/Why-Number-symbol-crashes-tp359554.html
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Nabble.com.
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