Draft of Function.prototype.bind.
david.hopwood at industrial-designers.co.uk
Mon Nov 10 18:29:56 PST 2008
Mark S. Miller wrote:
> On Mon, Nov 10, 2008 at 4:48 PM, Waldemar Horwat <waldemar at google.com> wrote:
>> Mark S. Miller wrote:
>>> 11. If the [[Class]] property of /G/ is *"Function"*, then
>>> 1. Get the *length* property of /G/.
>>> 2. Let /L/ be Result(11a) minus the length of /A/.
>> What does "minus" mean here? Result(11a) could be anything.
> Since this is conditional on the [[Class]] of G being "Function", doesn't
> that mean the length is created as a non-configurable readonly number
> property when G is created?
See my other reply. Yes for built-in objects; no for host objects, because
# The value of the [[Class]] property of a host object may be any value,
# even a value used by a built-in object for its [[Class]] property.
In general I think that the internal properties of host objects are
hopelessly underspecified. (That's partly why Jacaranda, ADsafe, and
Cajita have to depend on no host objects being reachable from subset
> Step 7 of 13.2 says:
> 7. Set the length property of F to the number of formal parameters
> specified in FormalParameterList. If no parameters are specified, set the
> length property of F to 0. This property is given attributes as specified in
The argument also has to depend on 220.127.116.11 steps 11c, 12, and 13.
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