I'm a new developer interested in using Hack. How do I install HHVM and Hack, specifically for a Debian-based system? Additionally, what are the three main benefits or features of Hack highlighted on the homepage?
Navigate to 'hacklang.org'. Identify and extract the three main benefits or features of Hack highlighted on the homepage. Click on the 'Install' link (ID 10). Locate the installation instructions for Debian-based systems on the 'Install' page. Extract the initial steps or commands for installing HHVM and Hack on a Debian-based system. Synthesize the identified features and installation steps into a concise answer.
The agent successfully navigates to 'hacklang.org'. The agent identifies and states 'Fast Development', 'Type Checking', and 'Built for HHVM' as the three main benefits/features of Hack from the homepage. The agent successfully navigates to the 'Install' page. The agent identifies the section for Debian-based installation. The agent provides the initial commands or steps for installing HHVM and Hack on a Debian-based system (e.g., adding the repository key, adding the repository, and installing hhvm).