Metaprog can be abstruse

[Dom Disc]

On Wednesday, 6 July 2022 at 00:11:58 UTC, kdevel wrote:
> On Monday, 4 July 2022 at 13:03:55 UTC, Dom Disc wrote:
> [...]
>> This advantage becomes much more clear in, let's say:
>> ```d
>> immutable long powersOfThree = iota(27).map!(p => 
>> 3.pow(p)).array;
>> ```
>> Handwritten this is a very long chain of arbitrary numbers and 
>> you have to put a very close look, that those are indeed the 
>> powers of three.
>
> Really?
>
> ```
> immutable long [] powersOfThree = [
>       1,
>       3,
>       3 * 3,
>       3 * 3 * 3,
>       3 * 3 * 3 * 3,
>       3 * 3 * 3 * 3 * 3,
>       3 * 3 * 3 * 3 * 3 * 3,
>       3 * 3 * 3 * 3 * 3 * 3 * 3,
>       3 * 3 * 3 * 3 * 3 * 3 * 3 * 3,
>       3 * 3 * 3 * 3 * 3 * 3 * 3 * 3 * 3,
>       3 * 3 * 3 * 3 * 3 * 3 * 3 * 3 * 3 * 3,
>       3 * 3 * 3 * 3 * 3 * 3 * 3 * 3 * 3 * 3 * 3,
>    ];
> ```

Ok, but with this, you can't see where the overflow will occur. 
So you have the same problem as with the one-liner (and it is 
indeed very much longer).