The verdict from numerous tech sites has been that Hack signals much good news. Writing and testing code for Facebook is made faster. The Hack team called it a programming language for HHVM (stands for the HipHop Virtual Machine, an open-source virtual machine designed for executing programs written in Hack and PHP). They already deployed Hack at Facebook. “Over the last year, we have migrated nearly our entire PHP codebase to Hack.” Hack has deep roots in PHP, they said. In fact, most PHP files are already valid Hack files. (As GigaOM reported Thursday, Facebook has been running Hack for a year alongside PHP and plans to gradually migrate as much of its new code as possible to Hack.) What’s the big deal? To appreciate the big deal about Hack, the team’s description of programming difficulties is useful, keeping in mind that slowdowns are no joke when working on Facebook-scale, which involves, said the posting, thousands of engineers shipping new code twice a day.
“Every PHP programmer is familiar with day-to-day tasks that can be tricky or cumbersome,” they said.
Read more at: Phys.org