14:08 <FromGitter> <cinnamonz:matrix.org> is there a pattern for using return types similar to golang where a function return would be `(T, Error?)` ? in this example `Error` is an alias for `String | Exception`.

14:08 <FromGitter> <Blacksmoke16> not really, most cases its more idiomatic to just use exceptions

14:08 <FromGitter> <Blacksmoke16> or nilable return types

14:10 <FromGitter> <cinnamonz:matrix.org> hmm, like raising an exception if the nilable return is nil?

15:09 <FromGitter> <oprypin:matrix.org> cinnamonz (https://matrix.to/#/@cinnamonz:matrix.org): Crystal is very well equipped for such a usage (String|CustomError), it's just super not idiomatic. indeed the options are String|Nil or String (+raise exception)

15:11 <FromGitter> <oprypin:matrix.org> Go style {T|Nil, Error|String|Nil} is even more ugly, not to even be seriously considered

15:40 <yxhuvud> something like returning a Result which is then subtyped into something like SuccessResult or ErrorResult is probably not something I'd consider an antipattern though. There are cases where I'd consider such a thing, but it is definitely not common.

16:31 <FromGitter> <cinnamonz:matrix.org> i see, good to know what's idiomatic. i'll stick with `T | Nil`.

18:25 <FromGitter> <cinnamonz:matrix.org> I was also thinking about an Assert macro today and saw the issue #4263 (https://github.com/crystal-lang/crystal/issues/4263). You think this could be reconsidered oprypin (https://matrix.to/#/@oprypin:matrix.org) ?

18:29 <FromGitter> <oprypin:matrix.org> cinnamonz (https://matrix.to/#/@cinnamonz:matrix.org): no i think it won't be reconsidered, even though I'm still all for it

18:32 <FromGitter> <oprypin:matrix.org> cinnamonz (https://matrix.to/#/@cinnamonz:matrix.org): this is just ⏎ ⏎ ```macro assert(cond) ⏎ ({{cond}}) || raise AssertionError.new({{cond.stringify}}) ⏎ end``` [https://gitter.im/crystal-lang/crystal?at=62e2d62f568c2c30d32a3e3f]

18:33 <FromGitter> <oprypin:matrix.org> and see for more advanced stuff here https://github.com/oprypin/crystal-dbus/blob/dd744b951dc2bc12399ac518f3a042965f64392b/src/util.cr#L24

18:34 <FromGitter> <oprypin:matrix.org> or for even more advanced (but isolated to unittests): https://github.com/search?q=user%3Aoprypin+spec_assert&type=code

18:36 <FromGitter> <cinnamonz:matrix.org> I saw your spec_assert during my initial search, I'll give that a whirl tests. And thanks for the other link, I'll read it and get some inspiration.