foreach (i; taskPool.parallel(0..2_000_000)

[Steven Schveighoffer]

On 4/4/23 5:24 AM, Salih Dincer wrote:

> Is it necessary to enclose the code in `foreach()`? I invite Ali to tell 
> me! Please explain why parallel isn't running.

parallel is a shortcut to `TaskPool.parallel`, which is indeed a 
foreach-only construct, it does not return a range.

I think what you want is `TaskPool.map`:

```d
// untested, just looking at the
taskPool.map!(/* your map function here */)
    (s.iota(len)).writeln;
```

Can't use pipelining with it, because it is a member function.

https://dlang.org/phobos/std_parallelism.html#.TaskPool.map

-Steve