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From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Re: Object.defineProperties
Date: Sun, 07 May 2017 02:40:36 +0200
Organization: PointedEars Software (PES)
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References: <oebtq0$2611$1@csiph.com> <objects-20170503082342@ram.dialup.fu-berlin.de> <oec3h1$2dav$1@csiph.com> <1943190.NgBsaNRSFp@PointedEars.de> <oeid9d$1ag1$1@csiph.com> <1592229.TLkxdtWsSY@PointedEars.de> <oekitc$2tgv$1@csiph.com> <2032926.ElGaqSPkdT@PointedEars.de> <oel4aa$9ml$1@csiph.com> <1982276.iZASKD2KPV@PointedEars.de> <oelelh$jon$1@csiph.com>
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Cezary Tomczyk wrote:

> On 06/05/2017 22:21, Thomas 'PointedEars' Lahn wrote:
>> Besides, an insufficient number of arguments should throw an exception
>> instead.
> 
> Agreed. In my other post I do throw new Error.

See my follow-up there.
 
>>>> The question remains: What is being *gained* by this comparably
>>>> inefficient precision instead of duck typing?  _Not_ all things
>>>> that *can* be done also *should* be done.
>>> The gain is to get the real type (let me call it like that) of object.
>> Why is that important?
> 
> One of the reason is because I use it in other function that extends
> deeply one object with another. I can't use Object.assign as the changes
> on extended object must not mutate original object.

See Stefan’s follow-up.
 
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