[psv1]

> To give an example, Rstudio does only one thing at the time, you are running a code, you cannot open a data frame even to look at it.

This isn't specific to R or RStudio. Start running a slow process in your Python IDE of choice, and while it's running try to execute df.head() to view some data frame - you won't be able to see it regardless of the language or IDE (and for a good reason).

[amirmasoudabdol]

I understand that good reason, it’s because scripting languages run on sessions. So, Rstudio couldn’t execute any new command while doing something else. That’s fine. What’s annoying and not ok is the fact that sometimes the entire interface freezes. UI has to be separated from the session and logic of the program. Rstudio doesn’t do this well.