What is “urweb” Package?

Ur/Web programming language
For more details: http://www.impredicative.com/ur/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install urweb.

  brew install urweb

Now, use urweb!