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attolisp's Introduction

Attolisp

Small mindfree-form implementation of scheme-like language. For fun.

Now supports:

  • numbers int/float, but strings very sporadic
  • ariphmetic and logic
  • function definitions
  • first class functions
  • recursion
  • module import, multiline module definitions
  • one-line expression repl

######Usage

$ python repl.py

>> (> 4 5)
False
>> (+ 10 3)
13
>> (+ (upcs 'pussy') (upcs 'cat'))
PUSSYCAT
>> (require prelude.scm)  ; import definitions from module
defined: abs
defined: inc
....
defined: empty_qqq  ; empty? mangled into empty_qqq
>> (abs -5)
5
>> (define (length lst) (if (empty? lst) 0 (+ 1 (length (cdr lst)))))
defined: length
>> (length (list 6 4 5))
3
>> (map inc (list 1 2 3 4))
(2 3 4 5)
>> (define (fact n) (reduce * 1 (range 1 n)))
defined: fact
>> (fact 5)
120

also see examples in prelude.scm

attolisp's People

Contributors

qwdm avatar

Stargazers

Carl Treudler avatar Roma Sokolov avatar Anna avatar

Watchers

James Cloos avatar Pep avatar  avatar

attolisp's Issues

constants

constant definition support needed

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