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Task ideas

Here are some ideas for the Ruby Hack Challenge. Feel free to choose any of them or try your own hacks.

Before your hack, please file your hack topic as a Github issue. This issue should contain:

  • Hack topic summary
  • Your name (or names. Group work is also welcome)

After your hack, close this ticket with your achievement summary.

Run tests on your specific environment

Ruby has test suites (explained in lecture materials). We run tests on some environments (you can check https://rubyci.org) periodically, but not all environments.

Please try and run the test suite on your environment, and if you have any trouble:

(1) write a report about it. (2) fix the issues.

Libraries

ruby/lib/ contains libraries written in Ruby. You can modify them without any C knowledge. Find out your issue and try to fix them.

Documentation

Ruby's documentation is written in RDoc. As you can see, RDoc documentation is written in .rb and .c files.

Please add information such as examples and so on.

Check unresolved issues

We file all issues on Redmine https://bugs.ruby-lang.org/issues/ and there are many unresolved tickets.

(1) Bug tickets

We need to fix many bugs but there we don't have enough resources. Please help us.

(1-1) Check if the bug is reproducible or not

There are resolved tickets but not closed because of many reasons (for example, forgot to close the issue, resolved accidentally with other issues, and so on).

Please check the bug is reproducible on new versions and report them. It should be very important information.

(1-2) Make small reproducible code

If a bug report contains a long explanation and reproducible process (for example, install xxx and yyy, run it with zzz and wait for several minutes...), it is very difficult to debug it.

Please try and find out how to reproduce with a small example. Reproducible code with make run is excellent.

(1-3) Try to fix a bug.

Of course, a patch is very welcome.

(1') report new bug ticket you found

And do (1-1) to (1-3).

(2) Feature tickets

There are several feature-request tickets.

(2-1) Consider the feature request

Please consider new features and report your thoughts. Concrete use-cases based on your experiences will help us. Conversely, thoughts on just your feelings are not usually enough. Fact is preferable (for example, consistency with other features, other languages and so on).

(2-2) Try to implement a feature request

Some tickets contains patches to implement it. Try it and report how you like it or not.

(2-3) Implement feature requests

Some tickets do not contain patches. Please implement them.

For example, ko1's ticket https://bugs.ruby-lang.org/issues/14609 is very easy to implement.

(2') Make your own feature request

And do (2-1) to (2-3).

For example, there are many methods in ActiveSupport but not in Ruby builtin/standard libary. Porting them is one topic (but you need to persuade Matz to introduce it).

Visualization

Now you can modify MRI by yourself! You can insert any "printf" into MRI c source code to see the behavior. This is a very simple Visualization.

Add your original visualization feature on terminal, GUI, sound or something cool.

Add your performance counter

ruby/debug_counter.[ch] provides a feature to add/show performance counters. Read implementation and try them. Try to set USE_DEBUG_COUNTER to 1 and run your script. You can see performance counters information.

After that, feel free to add your performance counters to check the true behaviour.