Lambda capture by value

[Adam D. Ruppe]

On Monday, 24 February 2020 at 19:50:23 UTC, JN wrote:
>     foreach (i; iota(5))
>     {
>         printers[i] = () { write(i); };

I know it looks silly but if you make that:

          printers[i] = (int i) { return () { write(i); }; }(i);

it will do what you want.

This is something that used to be common in javascript, write a 
little function that passes the capture-by-value args and returns 
the lambda you actually want and call it immediately.

That extra layer causes the compiler to create a new copy of the 
capture variables snapshotted in time.