diff options
author | Akshay <[email protected]> | 2020-11-05 16:21:30 +0000 |
---|---|---|
committer | Akshay <[email protected]> | 2020-11-05 16:21:30 +0000 |
commit | be7e5da6c3839002ac5355a86f5164c3f60c86cc (patch) | |
tree | 5e6831a9182625bc9697b837a64db0673caca349 /prelude | |
parent | 57edb75ca639bcc6bdc5838ac6b4beb72a5b7512 (diff) |
let there be lambda!
* begin form
* define form
* let derived form
* function application and stuff
Diffstat (limited to 'prelude')
-rw-r--r-- | prelude/primitives.scm | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/prelude/primitives.scm b/prelude/primitives.scm index 2e5f5d9..cd7f1bf 100644 --- a/prelude/primitives.scm +++ b/prelude/primitives.scm | |||
@@ -7,7 +7,7 @@ | |||
7 | bool? | 7 | bool? |
8 | true?)) | 8 | true?)) |
9 | 9 | ||
10 | (define (lift-bool expr) (if expr 'true 'false)) | 10 | (define (convert-bool expr) (if expr 'true 'false)) |
11 | (define (true? expr) (eq? expr 'true)) | 11 | (define (true? expr) (eq? expr 'true)) |
12 | (define (false? expr) (eq? expr 'false)) | 12 | (define (false? expr) (eq? expr 'false)) |
13 | (define (bool? expr) | 13 | (define (bool? expr) |
@@ -34,17 +34,18 @@ | |||
34 | 34 | ||
35 | (define (not-fn x) (not (true? x))) | 35 | (define (not-fn x) (not (true? x))) |
36 | 36 | ||
37 | (define (lift-arithmetic op) | 37 | (define (lift-bool op) |
38 | (lambda vals (lift-bool (apply op vals)))) | 38 | (lambda vals (convert-bool (apply op vals)))) |
39 | 39 | ||
40 | (define primitives | 40 | (define primitives |
41 | `((+ . ,+) | 41 | `((+ . ,+) |
42 | (- . ,-) | 42 | (- . ,-) |
43 | (* . ,*) | 43 | (* . ,*) |
44 | (< . ,(lift-arithmetic <)) | 44 | (< . ,(lift-bool <)) |
45 | (> . ,(lift-arithmetic >)) | 45 | (> . ,(lift-bool >)) |
46 | (<= . ,(lift-arithmetic <=)) | 46 | (<= . ,(lift-bool <=)) |
47 | (>= . ,(lift-arithmetic >=)) | 47 | (>= . ,(lift-bool >=)) |
48 | (eq? . ,(lift-bool eq?)) | ||
48 | (&& . ,and-special) | 49 | (&& . ,and-special) |
49 | (|| . ,or-special) | 50 | (|| . ,or-special) |
50 | (/= . ,not-fn) | 51 | (/= . ,not-fn) |