Interfaces

[doodad-js Admin]

I was more thinking of something like:

 

@interface

class Name {

}

 

@mixin

class Name {

}

 

...

 

 

From: impinball at gmail.com [mailto:impinball at gmail.com] On Behalf Of Isiah Meadows
Sent: Thursday, April 27, 2017 9:32 AM
To: doodad-js Admin <doodadjs at gmail.com>
Cc: es-discuss at mozilla.org
Subject: Re: Interfaces

 

They could be. I didn't initially include it, but that does logically follow from it.




-----

 

Isiah Meadows
me at isiahmeadows.com <mailto:me at isiahmeadows.com> 

 

On Thu, Apr 27, 2017 at 7:05 AM, doodad-js Admin <doodadjs at gmail.com <mailto:doodadjs at gmail.com> > wrote:

I like it. Are interfaces extendable? I mean something like...

interface CustomerSummary {
   // ...
}

interface CustomerDetails extends CustomerSummary {
   // ...
}

Claude Petit
doodadjs at gmail.com <mailto:doodadjs at gmail.com> 


-----Original Message-----
From: impinball at gmail.com <mailto:impinball at gmail.com>  [mailto:impinball at gmail.com <mailto:impinball at gmail.com> ] On Behalf Of Isiah Meadows
Sent: Thursday, April 27, 2017 1:23 AM
To: doodad-js Admin <doodadjs at gmail.com <mailto:doodadjs at gmail.com> >
Subject: Re: Interfaces

I'm thinking, maybe if someone could combine this with a decent mixin proposal, this would work well. 


Here's my idea for interface checking: 

 

Note: this != mixin. I probably could've worded this better...

 


```js
// These are all checked via duck typing.
interface IteratorResult {
    // Properties
    done;
    value;
}

interface Iterator {
    // required method
    next();
    // optional methods
    throw?();
    return?();
}

interface Iterable {
    // Dynamic method name, checked via `typeof obj[Symbol.iterator] === "function"`
    [Symbol.iterator]();
}

// Interfaces may be anonymous and are themselves // new primitives const dynamic = interface {
    foo();
};

assert(typeof dynamic === "interface");

// Check if something implements an interface // Done via duck type checking via `[[Has]]` for // properties and `[[Get]]` for methods if (value implements dynamic) {
    // ...
}

// Assert a class matches one or more interfaces class Foo implements Iterable, Iterator {
    // ...
}
```

It's intentionally a subset of TypeScript's interfaces, mod new runtime behavior, and it specifically works structurally to work with existing duck typing mechanisms. (Browsers can already optimize this fairly well.)
-----

Isiah Meadows
me at isiahmeadows.com <mailto:me at isiahmeadows.com> 


On Wed, Apr 26, 2017 at 11:42 PM, doodad-js Admin <doodadjs at gmail.com <mailto:doodadjs at gmail.com> > wrote:
> Hi, I’m starting a new thread from the bottom message.
>
>
>
> I did a great work to provide OOP in Javascript, but nobody seems to
> care, and some even given me bad intentions. But I continue to persist...
>
>
>
> My framework already provides a solution on the user space. All that
> remains is to port it to a more lower level, in combination to
> existing proposals like public class fields, private fields, class and property decorators, ...
> To just name a few.
>
>
>
> (I’m French, so I’m sorry if my English is not accurate)
>
>
>
> From: Jordan Harband [mailto:ljharb at gmail.com <mailto:ljharb at gmail.com> ]
> Sent: Thursday, February 02, 2017 2:25 PM
> To: T.J. Crowder <tj.crowder at farsightsoftware.com <mailto:tj.crowder at farsightsoftware.com> >
> Cc: es-discuss at mozilla.org <mailto:es-discuss at mozilla.org> 
> Subject: Re: Short Comparing proposal
>
>
>
> It seems like a far more useful proposal (although much larger in
> scope) would be some concept of interface comparison, and then you
> could see if `object` matches "an interface that has an `a` and `b`
> property", but also if `object` is "arraylike", or "iterable", or a "thenable", etc.
>
>
> _______________________________________________
> es-discuss mailing list
> es-discuss at mozilla.org <mailto:es-discuss at mozilla.org> 
> https://mail.mozilla.org/listinfo/es-discuss
>

 

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