On Mar 23, 2012, at 11:45 AM, Roger Andrews wrote:

> Concerning UTF-16 surrogate pairs, how about a function like:
>      String.isValid( str )
> to discover whether surrogates are used correctly in 'str'?
> 
> Something like Array.isArray().

No need for it to be a class method, since it only operates on strings. We 
could simply have String.prototype.isValid(). Note that it would work for 
primitive strings as well, thanks to JS's automatic promotion semantics.

Dave

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