# Proposal: SuperSet

Oğuz Kılıç oguzz.kilic at gmail.com
Tue Jul 9 21:01:03 UTC 2019

```Hi Jordan, yes.
Sorry for not looking in detail.

Thanks.

On Tue, Jul 9, 2019 at 11:32 PM Jordan Harband <ljharb at gmail.com> wrote:

> Are you perhaps looking for https://github.com/tc39/proposal-set-methods ?
>
> On Tue, Jul 9, 2019 at 1:18 PM Oğuz Kılıç <oguzz.kilic at gmail.com> wrote:
>
>> Yes, I already consider it as an enriched version of the current set
>> method, I just like calling it superset :)
>>
>> On Tue, Jul 9, 2019 at 11:05 PM Григорий Карелин <grundiss at gmail.com>
>> wrote:
>>
>>> Maybe add those methods into Set instead of creating new type?
>>>
>>> On Tue, 9 Jul 2019 at 23:02, Oğuz Kılıç <oguzz.kilic at gmail.com> wrote:
>>>
>>>> As you know, the current Set feature is not sufficient in some aspects.
>>>> We benefit from utility libraries or special implementations to fill this
>>>> deficiency.
>>>>
>>>> For example, wouldn’t it be better if we had the following approach?
>>>>
>>>> UNION
>>>>
>>>> X ∪ Y = { x | x ∈ X or x ∈ Y }
>>>>
>>>> let first = new SuperSet(["a", "b", "c"]);
>>>> let second = new SuperSet(["b", "c", "d", "e"]);
>>>>
>>>> first.union(second); //→ SuperSet { "a", "b", "c", "d", "e" }
>>>>
>>>> DIFFERENCE
>>>>
>>>> X - Y = { x | x ∈ X and x ∉ Y }
>>>>
>>>> let nums = new SuperSet([3, 4, 5, 6]);
>>>> let primes = new SuperSet([2, 3, 5, 7]);
>>>>
>>>> nums.diff(primes); // → SuperSet { 4, 6 }
>>>>
>>>> INTERSECT
>>>>
>>>> X ∩ Y = { x | x ∈ X and x ∈ Y }
>>>>
>>>> let nums = new SuperSet([3, 4, 5, 6]);
>>>> let primes = new SuperSet([2, 3, 5, 7]);
>>>> nums.intersect(primes); // → SuperSet { 3, 5 }
>>>>
>>>>
>>>> let nums = new SuperSet([1, 2, 3, 4]);
>>>> nums.discard([1, 3]); // → SuperSet { 2, 4 }
>>>>
>>>> Motivation
>>>> SuperSet - https://github.com/BYK/superset
>>>> _______________________________________________
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>>>> https://mail.mozilla.org/listinfo/es-discuss
>>>>
>>> --
>>> Отправлено с мобильного устройства
>>>
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>
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