tocariimaa/wiki
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

articles/lisp.md: update

Browse source
This commit is contained in:
tocariimaa 2025-02-15 13:04:13 -03:00
parent 677467e04c
commit 44ef71c658
1 changed files with 9 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
articles/lisp.md
View file

@ -18,10 +18,10 @@ a Lisp could be built in terms of lambdas. For example, using Church encoding th
(define (car p) (p (lambda (x y) x)))
(define (cdr p) (p (lambda (x y) y)))
(cdr (cons 'A 'B)) ; B
(car (cons 'A 'B)) ; A
(car (cdr (cons 'A (cons 'B 'C)))) ; B
(cdr (cdr (cons 'A (cons 'B 'C)))) ; C
(cdr (cons 'A 'B)) ; ==> B
(car (cons 'A 'B)) ; ==> A
(car (cdr (cons 'A (cons 'B 'C)))) ; ==> B
(cdr (cdr (cons 'A (cons 'B 'C)))) ; ==> C
```
A PDF of the original Lisp 1.5 manual can be found here: <https://www.lispmachine.net/books/LISP_1.5_Programmers_Manual.pdf>. Head to page 13 for
@ -43,9 +43,9 @@ Here's cons cell:
To create a cell, the builtin function `cons` is used:
```lisp
(cons 1 2) ; 1 and 2 are the car and cdr respectively
(car (cons 1 2)) ; ==> 1
(cdr (cons 1 2)) ; ==> 2
(cons 1 2) ; 1 and 2 are the car and cdr respectively
(car (cons 1 2)) ; ==> 1
(cdr (cons 1 2)) ; ==> 2
;; Also some Lisps accept the "dotted pair" notation as a shorthand:
(1 . 2)
```
@ -100,5 +100,5 @@ you're seeing the source encoded in a tree, directly by using S-Expressions. But
under a Lisp skin.
- ...
## Examples
TODO
## See Also
- [Forth](forth.md)