On Tue, Oct 7, 2014 at 11:59 AM, Dmitry Soshnikov <
[email protected]> wrote:

> On Tue, Oct 7, 2014 at 11:56 AM, Claude Pache <[email protected]>
> wrote:
>
>
>>
>>
>> > Le 7 oct. 2014 à 20:36, Dmitry Soshnikov <[email protected]>
>> a écrit :
>> >
>> > And other things are better be written:
>> >
>> > ```
>> > <ArrayKind>.from(iterable).map(mapfn)
>> > ```
>> >
>> > Am I still missing something?
>>
>> Yes:  `UInt32Array.from(['a', 'b', 'c], x => x.codePointAt(0))`
>>
>>
> Still seems the same as `NodeList` "issue":
>
> ```
> UInt32Array.from(['a', 'b', 'c].map(x => x.codePointAt(0)));
> ```
>

And after you have fed the data the `UInt32Array` expects, you can post-map
it as well:


```
UInt32Array.from(['a', 'b', 'c].map(x => x.codePointAt(0))).map(v => v * 2);
```

What's is wrong in here? We don't have "too much of responsibility"
anti-pattern, explicitly separate the transformation form mapping, and
explicitly say what the format of data a particular constructor expects
(thus, mapping it before passing, as it should be).

Dmitry
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