Ad hoc currying in Scheme (2)

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Lecture 4 - Page 25 : 34

Functional Programming in Scheme
Higher-order Functions

Ad hoc currying in Scheme (2)

Better results:

Expression

Value

(define gmap (curry-generalized map))
(define li-mapper (gmap li))
(li-mapper (list "one" "two" "three"))

("<li>one</li>" 
 "<li>two</li>" 
 "<li>three</li>")

(gmap li (list "one" "two" "three"))

("<li>one</li>" 
 "<li>two</li>"
 "<li>three</li>")

Examples of curry generalization of map. Using curry-generalized it is possible to make a li-mapper in an elegant and satisfactory way. The last row in the table shows that gmap can be used instead of map. Thus, gmap can in all respect be a substitution for map, and we may chose to redefine the name map to the value of (curry-generalized map).