Ask HN: Which Lisp should I learn?

Re:Ask HN: Which Lisp should I learn? by lispm on Monday November 02, 2020 @05:31AM (#24966515)

in the Lisp I'm using I get this:

    CL-USER 24 > (+ "a" 1)

    Error: In + of ("a" 1) arguments should be of type NUMBER.
      1 (continue) Return a value to use.
      2 Supply a new first argument.
      3 (abort) Return to top loop level 0.

    Type :b for backtrace or :c <option number> to proceed.
    Type :bug-form "<subject>" for a bug report template or :? for other options.

    CL-USER 25 : 1 >

There is a clear error message and direct ways to fix/report the problem. Including another REPL to investigate the error.

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Re:Ask HN: Which Lisp should I learn? by timonoko on Monday November 02, 2020 @06:51AM (#24967058)

CL Loop-macro error reporting is legendary:

    [1]> (loop until sun dies and moon explodes)
    *** - LOOP: illegal syntax near DIES in
        (LOOP UNTIL SUN DIES AND MOON EXPLODES)
    The following restarts are available:
    ABORT          :R1      Abort main loop

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Re:Ask HN: Which Lisp should I learn? by lispm on Monday November 02, 2020 @11:56AM (#24970207)

Python is most advanced:

    >>> [if dark then moon else sun]
      File "<stdin>", line 1
        [if dark then moon else sun]
          ^
     SyntaxError: invalid syntax

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