Overloading bitwise operators, which is pretty easy to determine?
var parent = { prop1: parent1 };
inherit + overrides
var obj = parent | { prop1: newValue1, inherit2 : inherit2 }
= { prop1: parent1, prop2: inherit2 }
inherit - overrides
var diff = proto & { prop1: newValue1: prop2: value 2 }
= { prop1: newValue1, prop2: val2 }
I already use constants in this way to represent complex preset objects;
var flags = [
'PRIVAVTE',
'ENUMERABLE',
'CONFIGURABLE',
'READONLY',
'WRITABLE',
'FROZEN',
'HIDDEN',
'NORMAL',
];
var flags = {
get name()
return flags[this.enumerable | this.configurable << 1 | this.writable
<< 2]
},
set name(){
this.configurable = Boolean(v & CONFIGURABLE);
this.enumerable = Boolean(v & ENUMERABLE);
this.writable = Boolean(v & WRITABLE);
}
}
On Sat, Mar 3, 2012 at 5:24 AM, Axel Rauschmayer <[email protected]> wrote:
> More possibilities (Alas, <* does not work, because the asterisk is not
> vertically centered in some fonts), in order of preference (the first one
> has already been suggested, but AFAIK not been rejected, yet).
>
> let sub = sup <: {p:1, q:2};
> let sub = sup <~ {p:1, q:2};
> let sub = sup <> {p:1, q:2};
> let sub = sup >< {p:1, q:2};
>
>
> On Mar 3, 2012, at 7:00 , Brendan Eich wrote:
>
> > I'm with Luke here. We shouldn't abuse a common idiom from other
> languages, including upstream ones such as CoffeeScript.
> >
> > Kris's suggestion of +> changed to deal with the "wrong direction"
> criticism (which I find compelling since the [[Prototype]] property is a
> reference):
> >
> > let sub = sup +< {p:1, q:2};
> >
> > (E4X ambiguity, no worries.)
> >
> > Comments?
>
> --
> Dr. Axel Rauschmayer
> [email protected]
>
> home: rauschma.de
> twitter: twitter.com/rauschma
> blog: 2ality.com
>
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