GitHub running off the main branch is fascinating, and initially sounds mad, but makes so much sense. Assuming they have very high test coverage, running against mainline Rails isn't really any different to having the fork they had before, but they have more influence on future development.

It must also be a massive boon for the Rails ecosystem to have such a large property running off the head.

Doesn't anyone know of any Django shops that do the same, running off mainline?

You MUST have an insane amount of test coverage to trust something like this to Ruby.

I'm new to Ruby, with 13 yoe as a SW engineer.

Personally, I find it a very hard language to master. Writing tests often feels like I'm settings variables left and right without seeing them being used in the current context. But that then happens to be part of the let() way in rspec.

Now you might say: why use rspec? I inherited this codebase, so gotta do what you gotta do.

I do really miss my compiler. I am not a fan of writing a block somewhere that can be invoked 2 weeks later for the first time and then fail, because someone passed in a number where a string was expected.

I went from PHP to Java to C# to F# to JS to Rust. F# and Rust stand out in terms of hardest to write, but easiest to trust.

I don't have that feeling with Ruby, and RoR.

But, again, my personal opinion. Good friend of mine started with Ruby, and he loves it. He says that he accepts the magic things for what they are, and uses them. My brain doesn't allow that. I have to understand.

Maybe some day Ruby will get type hinting. I'm loving it in Python.

In terms of the "I wrote a block somewhere and it broke when executed for the first time two weeks later" - don't do that in a scripting language. Use the REPL to build/test the block. That's the trade off - instead of a compiler you get a fast REPL - use it! :)

it already does

Please say more. What's your setup?

It’s… not ready for prime time. I’m optimistic that it can get there but right now the tooling is quite immature and the type system flexibility is not there for such a dynamic language as ruby.

Have you tried Tapioca (https://github.com/Shopify/tapioca) with Sorbet? Typing in general has ways to go sure, but I find this combination quite usable in my day to day.