Mark S. Miller wrote:
> Therefore, I'd prefer either #b or #c to #a. Between #b and #c I don't
> have a strong preference, but I think I prefer #b (it's safer) to #c
> (it more clearly preserves Tennent Correspondence and is generally
> easier to reason about). But I'd be happy with either.
>
> This question needs to be settled for the ES3.1 spec, and so has a
> greater urgency than many of our other recent discussions.
I share your discomfort with #a. I prefer #c because it gives the developer the
option to do stuff like
if (this === undefined) {
throw "Did you forgot to use the new operator when calling F?";
}
That would allow a library developer to provide more useful diagnostic
messages.
That is a low-value advantage, but I think it does break the tie. I don't see
#b
being any safer.
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