not exactly, you'd have to use getOwnPropertyKeys rather than
getOwnPropertyNames. Also it "rebinds" super references to from source object
to target objects.
On Mar 8, 2013, at 3:26 PM, Andrea Giammarchi wrote:
> am I understanding mixin correctly?
>
> 'mixin' in Object || (Object.mixin = function mixin(
> target, source
> ) {
> for(var
> keys = Object.getOwnPropertyNames(source),
> i = keys.length; i--; Object.defineProperty(
> target,
> keys[i],
> Object.getOwnPropertyDescriptor(
> source,
> keys[i]
> )
> )
> );
> return target;
> });
>
> thanks
>
>
> On Fri, Mar 8, 2013 at 2:35 PM, Allen Wirfs-Brock <[email protected]>
> wrote:
> The March 8, 2013 Rev 14 draft is now available at the usual place:
> http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts
>
> Changes include:
>
> Class bodies are now always string
> static methods may now be defined in ClassBody
> Updated comprehension syntax to use left-to-right order
> Eliminated is and isnt operators
> added grammar productions to allow unqualified super to be used after new
> operator
> expression to the right of of in for-of now restricted to being
> AssignmentExpression
> Almost all Chapter 15 constructors are now specified to have an @@create
> methid and are initialized in a manner that supports subclassing. (still need
> to work on Function)
> Added Object.getOwnPropertyKeys function
> Added Object.is function
> Tentatively added Object.mixin function
> Array.from now takes an optional map function
> Added String.prototype.normalize method
> All String.prototype methods that accept RegExp arguments will now work with
> subclasses of RegExp
> Renamed Number.prototype.toInt to Number.prototype.toInteger
> RegExp global, ignoreCase, multiline, source, sticky are now prototype
> accessor properties rather than instance own data properties. This is needed
> to support adding web compatible compile method.
> Added new RegExp.prototype methods that allow string methods to work with
> RegExp subclasses: match, replace, search, split, @@isRegExp
> Map and Set constructors now accept a =n optional comparator parameter. Only
> value currently allowed is “is”
> ArrayBuffer and TypedArray object length no long restricted to 232 limit
> Eliminated all remaining references to [[Class]] and [[NativeBrand]] (except
> for in some DataView code that needs rewritting anyway)
> Added SameValueZero abstraction operation that considers -0 and +0 to be the
> same value.
> Rename [[GetP]] to [[Get]] and [[SetP]] to [[Set]]
> Specified that unless otherwise indicated, internal data properties are
> created when an object is allocated. Internal data properties are now
> explicitly listed in ObjectCreate abstract operation calls.
> internally consolidated [[IsExtensible]]/[[IsSealed]/[[IsFrozen]] and
> [[PreventExtensions]]/[[Seal]]/[[Freeze]] into two MOP operations
> [[HasIntegrity]] and [[SetIntegrity]]. However, no public APIs (Proxy traps
> and Reflect functions) changed.
> Numerous editorial and technical corrections, clarifications, and bug fixes
>
>
> _______________________________________________
> es-discuss mailing list
> [email protected]
> https://mail.mozilla.org/listinfo/es-discuss
>
>
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