Kenta Murata

Since `CategoricalIndex` is an "index", it can keep looking up items by category values faster than using `#where`.

IRuby currently does not support an interactive debugger. But I'm working on supporting to use new debug.gem on JupyterLab or Jupyter client on VSCode.

@Prakriti-nith Could you try Jupyter notebook's custom.css?

I guess we need to introduce the control channel and support [`shutdown_request` message](https://jupyter-client.readthedocs.io/en/stable/messaging.html#kernel-shutdown) to fix this issue. I'm working on introducing the control channel due to debugger support. I'll extract...

I have a plan to implement the display prevention which is enabled by putting `;` at the end of a cell. This behavior is same as IJulia. Please wait a...

@Kerilk Thank you for reporting this issue. I confirmed that it is a bug that occurs only Ruby < 3.0. I'll fix it in the next version. ``` mrkn@mrkn-ubuntu2004:~/src/github.com/sciruby/iruby$ cat...

@ananyo2012 I want to see a code example of your suggestion.

I don't think your `activerecord_conn` method is useful for AR users. The parameters of AR::Base.establish_connection is not only the combination of adapter, user, password, and db_name, but it also accepts...

I checked the reason of this performance issue by perf. As a result, the main bottleneck is `rb_check_typeddata`. ``` # To display the perf.data header info, please use --header/--header-only options....

I investigated with non-optimized ruby to show the full call stack. The result is: ``` # To display the perf.data header info, please use --header/--header-only options. # # # Total...