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* From: Marc Feeley <feeley@iro.umontreal.ca> | On 14-Apr-06, at 8:47 PM, soo wrote: >> | Unfortunately, if you add a rest parameter to foo (and bar) >> | the error checking is lost. Good error checking is >> | important in the case of named parameters because you want >> | to catch any misspelling of the parameters. >> >> Can the exception for superfluous arguments be allowed because >> of that? If default value is taken because of misspelling of >> the parameter, it is programmer's responsibility. I don't >> understand why superfluous arguments are allowed in spite of >> absence of rest parameter. | I'm sorry, I don't understand what you are trying to say. | I'm guessing that you would like a duplicate parameter to be an error. I | expect erroneously duplicated parameters to be much less frequent than | misspelled parameters, and that it is easier to find that there is an | erroneously duplicated parameter. On the other hand there is a use case for | duplicate parameters, as I explained in my previous message. Moreover this | is how Common Lisp and DSSSL handle duplicate parameters (i.e. it is not | considered an error). I'm not trying to innovate here. Since one of the | goals of this SRFI is to be compatible with DSSSL when possible, the only | deviation would have to be motivated by a significant issue. I don't find | that's the case here. I overlooked the sentence, "It is an error if the parameter name is not the same as a variable in a <keyword formal>.". Thank you for kind reply. -- Joo ChurlSoo