On Oct 18, 2013, at 7:21 AM, Rick Waldron wrote:
>
>
>
> On Fri, Oct 18, 2013 at 8:46 AM, Mathias Bynens <[email protected]> wrote:
> ES6 fixes `String.fromCharCode` by introducing `String.fromCodePoint`.
>
> Similarly, `String.prototype.charCodeAt` is fixed by
> `String.prototype.codePointAt`.
>
> Should there be a method that is like `String.prototype.charAt` except it
> deals with astral Unicode symbols wherever possible?
>
> >> '𝌆'.charAt(0) // U+1D306
> '\uD834' // the first surrogate half for U+1D306
>
> >> '𝌆'.symbolAt(0) // U+1D306
> '𝌆' // U+1D306
>
> I think the idea is good, but the name may be confusing with regard to
> Symbols (maybe not?)
>
Given that we have charAt, charCodeAt and codePointAt, I think the most
appropiate name for such a method would be 'at':
'𝌆'.at(0)
The issue when this sort of method has been discussed in the past has been what
to do when you index at a trailing surrogate possition:
'𝌆'.at(1)
do you still get '𝌆' or do you get the equivalent of
String.fromCharCode('𝌆'[1]) ?
Allen
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