Stefan Monnier wrote:

I rest my case: you're confusing variables and symbols.
Symbols are fundamentally nothing more than hash-consed strings.

Symbols are created by the lexer, not by the evaluator, so insertion into
a big obarray only affects the performance of the lexer/parser.


        Stefan


Thanks, I guess I understand a bit more. Just out of curiosity: Does the lexer/parser know that it is a let variable at the time the symbol is inserted or is that information only available later to the evaluator?


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