Kona [[Getter]] and [[Setter]] descriptions
david.hopwood at industrial-designers.co.uk
Sun Nov 16 19:32:30 PST 2008
Peter Michaux wrote:
> On Sun, Nov 16, 2008 at 10:11 AM, Allen Wirfs-Brock
> <Allen.Wirfs-Brock at microsoft.com>
>> [[Getter]] A zero-argument function that is called to return the property value each time the property read.
>> [[Setter]] A one-argument function that is called with the assigned value each time the property is assigned. The effect of a property's [[Setter]] function may but it not required to have an effect on the value returned by subsequent calls to the property's [[Getter]] function.
> These descriptions are going back towards the idea of "state" and a
> connection between getting and setting. I don't think that is
> necessary even though that is the motivation for their existence.
> Getting and setting are two totally disjoint operations unless a
> particular object is implemented so they are connected.
Yes. How about this:
[[Getter]] A zero-argument function that is called each time the
property is read (via a [[Get]] operation), to return the
result of the read.
[[Setter]] A one-argument function that is called with the written
value each time the property is written (via a
The references to [[Get]] and [[ThrowablePut]] are needed because it is
possible for host objects to override any of the internal methods in such
a way that [[Getter]] and [[Setter]] are not used, even when there is a
property read (call to GetValue) or write (call to PutValue).
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