Scheme Notes

Scheme examples are using the Guile programming lanuage

Guile is an interpreter and compiler for the Scheme programming language, a clean and elegant dialect of Lisp. Guile is up to date with recent Scheme [Guile-Documentation]

guile> (boolean? #t)
#t

guile> (boolean? "Hello, World!")
#f

guile> (symbol? 'xyz)
#t

guile> (symbol? 42)
#f

guile> (define xyz 9)
guile> xyz
9

guile> (set! xyz #\c)
guile> xyz
#\c

guile> (define x '(1 2 3 4))
guile> x
(1 2 3 4)
guile> (set-car! x 2)
guile> x
(2 2 3 4)

caar

stands for car of car of

cdar

stands for cdr of car of

guile> (define y (list 1 2 3 4))
guile> (list-ref y 0)
1
guile> (list-ref y 3)
4
guile> (list-tail y 1)
(2 3 4)
guile> (list-tail y 3)
(4)

guile> ((lambda (x) (+ x 2)) 5)
7

guile> (define x '(1 2 3))
guile> (apply + x)
6

[Guile-Documentation]

http://www.gnu.org/software/guile/