Metaprog can be abstruse

[Bastiaan Veelo]

On Monday, 4 July 2022 at 08:24:01 UTC, user1234 wrote:
> Example:
>
> ```d
> auto genDecimalRanks()
> {
>     import std.conv;
>     auto r = 1;
>     auto result = "[";
>     foreach (i; 1 .. 11)
>     {
>         result ~= to!string(r);
>         if (i < 10)
>             result ~= ", ";
>         r *= 10;
>     }
>     result ~= "]";
>     return result;
> }
>
> /// like 
> [1,10,100,1000,10000,100000,1000000,10000000,100000000,1000000000]
> immutable decimalRanks = mixin(genDecimalRanks);
> ```
>
> It takes much more space and time to write DDOC + the generator 
> than the space + time required to write the equivalent explicit 
> declaration without comments, i.e "self documenting".
>
> So metaprog is not the panacea, do you think to that before 
> "meta-progrogramming", or do you "meta-prog" just because it's 
> nice ?

Not necessarily.
```d
immutable decimalRanks = iota(10).map!(p => 10.pow(p)).array;
```

-- Bastiaan.