exercises(raindrops): implement

[ee7]

To-do:

• config.json: practices / prerequisites

[rofrol]

Is the solution correct? Or testing?

I think either we

1. pass allocator
2. pass buffer but expect length returned. Like here in section "Passing the slice as a parameter" https://blog.orhun.dev/zig-bits-01/

[ee7]

Is the solution correct? Or testing?

@rofrol Hey. Thanks for the comment, and sorry for the slow reply. The example solution here isn't returning a pointer to stack-allocated memory, if that's what you mean.

But it's not critically important that the example solution in this repo is the most idiomatic one, partly because the example solution isn't user-facing. The important thing is that the example solution passes the tests, and that the tests are such that it's possible to write a reasonably idiomatic solution (or ideally, a range of reasonable solutions, so that there's scope for discussing the tradeoffs of various approaches). Please yell at me if you think the tests don't allow that.

And let's go without an allocator for this exercise. We'll have enough exercises that use an allocator, and in this one, we always know the maximum memory required at the call site.