Stop show with sound -- Keyboard shortcut: 'x'  Next slide in show -- Keyboard shortcut: 'n'  17 secondsHigher-order Functions - slide 19 : 34

The zipping function
zipping.scm
The function zip.
Expression

 Value

(zip cons '(1 2 3) '(a b c))
 
((1 . a) (2 . b) (3 . c))
(apply string-append
 (zip 
  string-append
  '("Rip" "Rap" "Rup")
  '(", " ", and " "")))
 
"Rip, Rap, and Rup"
(string-merge 
  '("Rip" "Rap" "Rup") '(", " ", and "))
 
"Rip, Rap, and Rup"
Zip is similar to the function string-merge from the LAML general library

However, string-merge handles lists of strings non-equal lengths, and it concatenates the zipped results