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Allegro CL |
1 Introduction  1.4 Definitions 1.4.4 Interpreting Dictionary Entries 1.4.4.20 The "Syntax" Section of a Dictionary Entry
1.4.4.20.3 Requiring Non-Null Rest Parameters in the "Syntax" SectionIn some cases it is useful to refer to all arguments equally as a single aggregation using a rest parameter while at the same time requiring at least one argument. A variety of imperative and declarative means are available in code for expressing such a restriction, however they generally do not manifest themselves in a lambda list. For descriptive purposes within this specification,F &rest arguments+ means the same as F &rest arguments but introduces the additional requirement that there be at least one argument. |