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In Common Lisp, '(' is a macro character that triggers a reader macro to read/parse the list it surrounds with a pair ')'.

More info: https://gist.github.com/chaitanyagupta/9324402

This one demonstrates how what's read in can be parsed - sort of a "Lisp in Lisp" version of eval: https://stevelosh.com/blog/2016/06/symbolic-computation/#s11...




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