eval-when

Eval-when uses?

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问题 After reading a lot of documentation regarding Lisp eval-when operator I still can't understand its uses, I know with this operator I can control the evaluation time of my expressions but I can't figure out any example where this may be applicable ? Best Regards, utxeee. 回答1: Compilation of a Lisp file Take for example the compilation of a Lisp file. The Lisp compiler processes the top-level forms. These can be arbitrary Lisp forms, DEFUNs, DEFMACROS, DEFCLASS, function calls,... The whole

Eval-when uses?

阅读更多关于 Eval-when uses?

After reading a lot of documentation regarding Lisp eval-when operator I still can't understand its uses, I know with this operator I can control the evaluation time of my expressions but I can't figure out any example where this may be applicable ? Best Regards, utxeee. Compilation of a Lisp file Take for example the compilation of a Lisp file. The Lisp compiler processes the top-level forms. These can be arbitrary Lisp forms, DEFUNs, DEFMACROS, DEFCLASS, function calls,... The whole story how the file compiler works is too complex to explain here, but a few things: the file compiler

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