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The difference has not been "provided by me", the discussion around Lisp family vs. dialects goes on for several decades. We had the same discussions on comp.la
by lispm 3y ago
The difference has not been "provided by me", the discussion around Lisp family vs. dialects goes on for several decades. We had the same discussions on comp.lang.lisp decades ago, while Scheme users then had their own comp.lang.scheme .
Lisp dialect? Sure, long ago. Now Scheme is its own language. It's like the uncle who now no longer lives in Germany and speaks no longer German, but lives in England where they speak a Germanic Language, called English, which again has its own dialects. https://en.wikipedia.org/wiki/Germanic_languages https://en.wikipedia.org/wiki/Germanic_languages English has its roots in old Common Germanic (no joke, see https://en.wikipedia.org/wiki/Proto-Germanic_language https://en.wikipedia.org/wiki/Proto-Germanic_language). Here we have the difference between Germanic and German. It's basically the same between the Lisp family ("Lispic") and Lisp.
There are many other places where authors in the Scheme literature have emphasized the difference between (original) Lisp and Scheme. They tell for example how things are done in Scheme vs. Lisp.
The SICP foreword says "Lisp changes. The Scheme dialect used in this text has evolved from the original Lisp and differs from the latter in several important ways, including static scoping for variable binding and permitting functions to yield functions as values."
If there are enough of these changes then Scheme begins to be its own language family.
Kent Pitman once has explained this: https://groups.google.com/g/comp.lang.lisp/c/TEk4O4-zsA8/m/HLonoeiFG4cJ https://groups.google.com/g/comp.lang.lisp/c/TEk4O4-zsA8/m/H...
Typical user question: "should I learn Lisp or Scheme?", answer from Kent: "learn both".
then he explains:
"Others divide up this space differently than I, but for most purposes, I personally regard them as distinct langauges, not mere dialectal variations, although plainly they are from what I would call the same
language family."
That's my view also.
The difference once has been described like this:
Schemer: "Buddha is small, clean, and serious."
Lispnik: "Buddha is big, has hairy armpits, and laughs."
- kazinator 3y agoBut the Common Lisp dialect also "has evolved from the original Lisp and differs from the latter in several important ways, including static scoping for variable binding and permitting functions to yield functions as values". :)
- lispm 3y agoBut with an effort to be backwarts (sic!) compatible. Code moved from Maclisp to ZetaLisp to Common Lisp. One can write (mapcar (function (lambda (...) ...)) ...), but the (dolist (...) ...) is still there. Even PROG is still there. For Scheme code needed to be rewritten, especially since Scheme changed more: syntax, different macro system, different control flow, different control flow abstractions, less built-in features, old features added back by libraries, ...