Rex Jaeschke
Computer Consultant
I am a consultant, author, and a leader and designer of seminars, specializing in the programming languages C, C++, C++/CLI, C#, Java™, and Visual Basic .NET™. I am also involved in a number of U.S. and international standards committees.


To see my personal blog (on which I post a 4-8-page essay each month) click here.


As part of my work for Facebook, I wrote the first formal specification for the PHP language. This spec is available to the public at I also wrote one for Hack, Facebook's strongly typed language that is built on PHP. That spec is available at