Convert array to custom type when passing function argument

[Adam D. Ruppe]

On Wednesday, 17 April 2019 at 12:20:49 UTC, Stefanos Baziotis 
wrote:
> I want to be able to make it work array-like to have compact 
> function calls.
> Something like this:
> test([1,2,3]);

This is the "implicit construction" I sometimes talk about.... 
and D doesn't support it, by design (alas).

There's two options you can do:

1) offer an overload to your function that does the conversion:

void test(Buf!int arr) { /* impl here */ }
void test(int[] arr) { test(Buf!int(arr)); } // just forward to 
the other

or

2) Offer a helper construction function you can call, like:

Buf!int toBuf(int[] a) { return Buf!int(a); }

and then you can call the  function like

test([1, 2, 3].toBuf); // calling your function at the end