Array as hash tables

[Thomas 'PointedEars' Lahn]

Re: Array as hash tables

Lasse Reichstein Nielsen wrote:
[color=blue]
> Thomas 'PointedEars' Lahn <PointedEars@we b.de> writes:[color=green]
>> I meant that you do not check if there is a prototype
>> property (yet) before over*writing*/overlaying it.[/color]
>
> Correct. It shouldn't matter, though.[/color]

Hmmm.
[color=blue][color=green]
>> Hmmm. If you overlay `prototype', you would destroy
>> (the possibility of) inheritance, would you not?[/color]
>
> No. The "prototype" property is only relevant on function objects, and
> the map object ("this.map") is just a normal object. [...][/color]

Of course (oh my, it is really *hot* weather here!!1 :-)).
I meant `constructor' (and the like). Can you think of
overlaying one of them to interfere with normal operation
(toString() aside, which is obvious)?
[color=blue][color=green]
>> ACK, but I would refrain from overlaying prototype properties anyway
>> here.[/color]
>
> Out of curiosity: Why?[/color]

AFAIS it makes the implementation less flexible and thus restricts
the freedom of the users to apply it to their needs, effectively
making it less attractive to them.


PointedEars

[Lasse Reichstein Nielsen]

Re: Array as hash tables

Thomas 'PointedEars' Lahn <PointedEars@we b.de> writes:
[color=blue]
> I meant `constructor' (and the like). Can you think of
> overlaying one of them to interfere with normal operation
> (toString() aside, which is obvious)?[/color]

No. There isn't really any "normal operation" for an instance of
Object. The "constructo r" property is only a convenience, it is never
used for anything by the language. The functions like "hasOwnProperty "
are also only used by the programmer. The language sematics uses
[[hasProperty]] directly, so overwriting "hasOwnProperty " will not
affect anything except specific user-introduced calls to that.
[color=blue]
> AFAIS it makes the implementation less flexible and thus restricts
> the freedom of the users to apply it to their needs, effectively
> making it less attractive to them.[/color]

I don't see any restriction in this case, but if there were some,
it would be a reason.

/L
--
Lasse Reichstein Nielsen - lrn@hotpop.com
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