Subject: How to find a procedure given a symbol or string From: "Mitch C. Amiano" <amiamc@xxxxxxxxxxxxxxx> Date: Tue, 27 Jul 1999 09:22:08 -0400 |
A question for the old-time DSSSLers out there: is there any way to produce an existing procedure object when given a string or a symbol? I want to use an attribute value to determine a function to be called, and want to avoid lots of "if"s or a "case". That is, given tags like <jediknight name="obiwan" func="apprentice"> <jediknight name="maul" func="apprentice"> <jediknight name="anakin" func="badactor"> and a DSSSL functions (define (apprentice name) (string-append name " is an apprentice" )) (define (badactor name) (string-append name " needs more work" )) I want to use the value of "func" to call the correct DSSSL function, something like what would be expressed as "call-some-function-using-a-string" in the following snippet: (element JEDIKNIGHT (let ( (func (attribute-string "FUNC") ) (name (attribute-string "NAME") ) ) (literal (call-some-function-using-a-string func name) ) ) ) Can this be done without resorting to ifs or case? Thanks - Mitch Amiano Mitch.C.Amiano@xxxxxxxxxxxxxxx DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
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