You’ve created and maintained several languages. You started as an implementer of Turbo Pascal; is there a natural progression from implementor to designer?
Anders Hejlsberg: I think it’s a very natural progression. The first compiler I wrote was for a subset of Pascal, and then Turbo Pascal was the first almost full implementation of Pascal. But Pascal was always meant as a teaching language and lacked a bunch of pretty common features that are necessary to write real word apps. In order to be commercially viable, we immediately had to dabble in extending in a variety of ways.
It’s surprising that a teaching language would be so successful in bridging the gap between teaching and commercial success.
Anders: There are many different teaching languages. If you look at Niklaus Wirth’s history—Niklaus Wirth designed Pascal, later Modula and Oberon—he always valued simplicity. Teaching languages can be teaching ...