Re:Paul Graham on SICP (2000)
by lispm on Thursday August 02, 2018 @09:17AM
(#17671151)
Somehow.
The original first CLOS implementation called PCL (Portable CommonLoops) was written in 100% Common Lisp with very little implementation specific CL code. PCL was a library which ran on at least 15 different Common Lisp implementations.
What really is a myth that it's (only) macros. That CLOS implementation is a complex library written as data types, functions, macros, ... and which was bootstrapped to be partly written in itself using classes, method, generic functions, ...
The original first CLOS implementation called PCL (Portable CommonLoops) was written in 100% Common Lisp with very little implementation specific CL code. PCL was a library which ran on at least 15 different Common Lisp implementations.
What really is a myth that it's (only) macros. That CLOS implementation is a complex library written as data types, functions, macros, ... and which was bootstrapped to be partly written in itself using classes, method, generic functions, ...
See for example: https://github.com/binghe/PCL