[GSoC] Trying to find a good topic

[Mike Franklin]

On Friday, 29 March 2019 at 15:35:10 UTC, Dan Printzell wrote:

> If you want to you (others are also welcomed) can look through
> my draft to make sure I have not written anything stupid and
> possibly suggest improvements.
>
> https://docs.google.com/document/d/15ba1vC1T7n2vX8kvQVikOj1Ip1-mt-zyiEwd0OYBoQA/edit?usp=sharing

We've finished the implementation of `_d_arraycast` as a 
template.  I followed essentially the same procedure in your 
propose.

1) https://github.com/dlang/druntime/pull/2264 - Add new template 
to druntime with unittests verifying the implementation

2) https://github.com/dlang/dmd/pull/9516 - Update DMD to call 
the template and remove calls to the previous runtime hook

3) https://github.com/dlang/druntime/pull/2535#event-2241980654 - 
Remove the no-longer-used, old runtime hook from druntime

I made the mistake of planning for betterC in (1).  It made 
things a little too complicated which delayed the implementation 
and required me to have to do a little back-and-forth with Walter 
on how to not rock the boat too much.  You've already stated 
you're going with a direct translation.  That's good.  This at 
least shows some of the changes that may be required to get a 
feature working in betterC in a followup PR.  It also shows how 
complicated things can get when considering betterC.  I still 
have to add DMD PR to verify the betterC implementation, but I'm 
a little on the fence about it.

Anyway, in addition to Lucia's PRs...

https://github.com/dlang/dmd/pulls?utf8=%E2%9C%93&q=is%3Apr+author%3Asomzzz+
https://github.com/dlang/druntime/pulls?utf8=%E2%9C%93&q=is%3Apr+author%3Asomzzz+

... it serves as a good case study.

Mike