Add hints to hello-world exercise

[abo64]

#220 add HINTS.md to hello-world exercise.
Question is whether we should agree on a common format for those hints?

[ErikSchierboom]

I love this. The only thing I'm not sure of, is the link for the no-null hint. It now links to Wikipedia, but I think a Scala-specific link would be better. I've managed to find this explanation, which does are fairly good job of explaning why you shouldn't use return. It might be a bit difficult for newbies though.

[abo64]

@ErikSchierboom I was also not too happy about this link, but couldn't find anything nice (incl. your link which I also considered too theoretical for beginners).
Now I just searched again and stumbled upon this. What do you think?

[ErikSchierboom]

Much better. I think it is at least good enough until we find something better.

[abo64]

changed the link.

[ErikSchierboom]

I think you need to add an empty line before the 1.: https://github.com/abo64/xscala/blob/0dc08838d532af9f02ede9c7617fca03369f85fc/exercises/hello-world/HINTS.md

[abo64]

@ErikSchierboom Seems it cannot handle these ordered lists.
Changed it to an unordered list (using hyphens).

[ErikSchierboom]

Looks good.

@ricemery would you like to merge the PR's yourselves, or should we (the other maintainers) also be allowed to do that? Perhaps we should make it a rul that we cannot merge our own PR's, to prevent overlooking mistakes.

[abo64]

I found this quite plausible. But:
Avoid merging your own pull requests (but it's fine if it's really simple) - the question is always what is "really simple".

[ErikSchierboom]

Indeed. But now that we have several maintainers, I think we could try to not merge our own PR's. But I don't know what the others thing about this.

[abo64]

Most often the rules without any exceptions are the best.
So I also think we should try to never merge our own PRs.

[ricemery]

Agreed. By default we should not merge our own PRs.

…

On Thu, Dec 1, 2016 at 4:53 AM abo64 ***@***.***> wrote: Most often the rules without any exceptions are the best. So I also think we should try to never merge our own PRs. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#222 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABeHG1IjHDsAAM9_omNLtKD6CC7MrdZOks5rDrVJgaJpZM4LAH6X> .

[ErikSchierboom]

@ricemery So it would be okay if I merged this PR?

[ricemery]

Absolutely! Thanks

…

On Thu, Dec 1, 2016 at 10:08 AM Erik Schierboom ***@***.***> wrote: @ricemery <https://github.com/ricemery> So it would be okay if I merged this PR? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#222 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABeHG1NuJdhwmP1Kxczb7AQ_mSbPHhiYks5rDv8agaJpZM4LAH6X> .

[ErikSchierboom]

Thanks @abo64!