||= is much needed?

[satyr]

On Sat, Jun 16, 2012 at 4:33 AM, David Herman <dherman at mozilla.com> wrote:

> As for null, I can see how there's confusion about whether to use null vs
> undefined, and so I can see why CoffeeScript would just try to blur the
> distinction between them.
>

Not just for blurring. Rejecting `null` is essential for CoffeeScript's
"existence" due to `?.`, the soak/safe access operator.
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