Open the interactive environment with the code you are writing.
## Ruby Example
You are writing the following code in an unnamed buffer.
class C
def self.f(x)
x + 1
end
end
Now you want to try running the code in an interactive environment. Usually you are supposed to (1) save the code on somewhere, (2) open a terminal, (3) run `irb -r {the-file}`.
If you already installed quickinteractive.vim, you just have to run `:Repl` or to type `<space>i`. It opens a buffer that is the environment you wanted.