00:39 <companion_cube> ah funny, use `%{read:…}`

00:39 <companion_cube> I use `(cat …)` I think, or run cat, sth like that

00:39 <companion_cube> but yeah I've done the same in dune many times

15:51 <olle> How do I define the .opam file after installing all dependencies?

15:52 <olle> For my project, not home file

15:53 <olle> Or is that a dune thing rather? o0

16:45 <Ankhers> What exactly does the ocp-indent package do, and is it important if I am using the emacs tuareg mode?

17:49 <discocaml> <sim642> olle, you can list your dependencies in the dune-project file and generate the opam file from that

18:39 <Ankhers> I have a file in a known format. I want to use String.split_on_char to split it into two strings. This should always succeed, if it does not, I am fine with the application crashing. But when I do let (first :: second) = String.split_on_char '-' my_string, I get an error saying that the pattern is non-exhaustive. I understand what this means, but is there a way to bypass this without needing to

18:39 <Ankhers> use a match with a catch all that just calls failwith?

18:53 <discocaml> <jumpnbrownweasel> you can do `assert false` in the catch all. this doesn't return of course, but is typed to returns 'a, meaning that it satisfies any type constraint in that position.

19:01 <discocaml> <jumpnbrownweasel> oh, `failwith` is typed the same way, so either one works.

19:02 <discocaml> <jumpnbrownweasel> i use `assert false` when it is easily provable that it can never happen, and `failwith` otherwise

19:30 <Ankhers> The point being though, that I do need to include that branch and I can't just simply assign like that. Thanks.

19:57 <discocaml> <jumpnbrownweasel> Right, all pattern matching is exhaustive.

20:47 <discocaml> <._null._> You can have non-exhaustive pattern matching, if you explicitly disable the warning (you can disable it locally)