# How to start contributing to Typed Racket? **URL:** \ **Category:** Questions & Answers\ **Tags:** typed-racket\ **Created:** [February 22, 2022, 11:39pm UTC](https://racket.discourse.group/t/how-to-start-contributing-to-typed-racket/720 "2022-02-22T23:39:20Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![scolobb](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/scolobb/32/108_2.png) [@scolobb](https://racket.discourse.group/u/scolobb)\ **Post date:** [February 22, 2022, 11:39pm UTC](https://racket.discourse.group/t/how-to-start-contributing-to-typed-racket/720/1 "2022-02-22T23:39:20Z")
Hi, TL;DR: How to start contributing to Typed Racket? ## Full disclosure I am working on a [library](https://git.marvid.fr/scolobb/dds) to support my research. I am quite fond of types and of Typed Racket, and I would like to write as much of Typed Racket as I can. I have been writing Racket since the beginning of 2020, but I am only starting to wrap my head around macros. Before switching to Racket, I programmed in Haskell for about 8 years. In the yet untyped part of my library, I wrote a function using `for/stream`, which is not yet provided by Typed Racket. I read the [definition of `for/stream`](https://github.com/racket/racket/blob/fd2fb918c9f80f2f97f141af646c0a10e6b5b066/racket/collects/racket/stream.rkt#L370) and saw that it relies on `for/foldr` which is provided by Typed Racket, however, the typed version does not yet have the `#:delay` keyword, which means that the literal expansion of `for/stream` to `for/foldr` will not work with Typed Racket. Furthermore, dropping `#:delay` evaluates too many things, meaning that even taking the first 10 elements of `in-naturals` never halts. I went to read the [definition of `for/foldr` in Typed Racket](https://github.com/racket/typed-racket/blob/3274d419dd2700cf27fd083e0ab106c7da99f802/typed-racket-lib/typed-racket/base-env/prims.rkt#L429) and saw that Typed Racket defines `for/fold` together with `for/foldr`. Since only `for/foldr` in Racket collects has the `#:delay` keyword argument, I realized that I would need to split this definition. However, I don't really see what would be the best way to do it. Further, how do I add the `#:delay` keyword argument? Does it need a new syntax class? Clearly, I lack experience with Racket and Typed Racket to properly tackle this question directly. I should probably start with simpler contributions and work my up to more substantial changes. ## Question How do I start contributing to Typed Racket from where I am now? I don't absolutely need `for/stream` in my library, as I can do everything I need with the primitives coming from @AlexKnauth 's https://github.com/AlexKnauth/typed-racket-stream. However, adding a keyword argument to typed `for/foldr` doesn't seem to be a ground-breaking change, and it may help other people. Ideally, I would like to be able to help Typed Racket stay up-to-date with the corresponding Racket code. I have already asked this question about 1.5 years ago and @samth directed me to the Asumu's video explaining typed classes. Is this still a good entry point? Are there some easy low-hanging fruit? Thank you for reading to the end ๐Ÿ™‚ ---
**Author:** ![alexh](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/alexh/32/315_2.png) [@alexh](https://racket.discourse.group/u/alexh)\ **Post date:** [February 23, 2022, 10:09pm UTC](https://racket.discourse.group/t/how-to-start-contributing-to-typed-racket/720/2 "2022-02-23T22:09:12Z")
> [@scolobb](#): > > Are there some easy low-hanging fruit? Here is one way you can help: There are about 250 issues in the Typed Racket repository, many of them with no comments. You can try to investigate and fix one or more of these issues. This would work something like this: - pick an issue - try to reproduce the problem based on the description - if you cannot reproduce it, as the reporter for clarifications, - if you can reproduce it, try to find the location in the source code that is responsible for the problem. - either provide a fix yourself as a pull request or add a comment to the issue describing the exact problem and how to fix it. - repeat with the next issue ๐Ÿ™‚ Also, if you get stuck on an issue, you can just simply pick another one. There are also general maintenance tasks for issues. For example, this one: [append\* not compiling ยท Issue #1178 ยท racket/typed-racket ยท GitHub](https://github.com/racket/typed-racket/issues/1178) appears to be fixed, but it was left open. Perhaps you could prompt the maintainers to close it... There is also the option to contribute to the documentation. This might be easier, but it is unlikely to improve your familiarity with the Typed Racket code base, which, as I understand, is your goal. Best Regards, Alex. ---
**Author:** ![scolobb](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/scolobb/32/108_2.png) [@scolobb](https://racket.discourse.group/u/scolobb)\ **Post date:** [February 23, 2022, 10:25pm UTC](https://racket.discourse.group/t/how-to-start-contributing-to-typed-racket/720/3 "2022-02-23T22:25:01Z")
Thanks a lot @alexh ! I'll follow your plan of attack ๐Ÿ‘