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3-LISP WORKING GUIDE#12: Strict operations

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Issue #12:Strict operations

Description:Should the truth-value operations tend to be fussy about their arguments? E.g., should (EF 1 ’YES ’NO) cause an error, or should it normalize to ’NO, as regular LISPs would do?

Status:Resolved: that the following procedures should expect truth-values and complain when they are not placated: EF, IF, AND, OR, NOT, and COND.

Last Edited:September 20, 1982 (Jim des Rivières)

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