diff options
| -rw-r--r-- | control/monad.scm | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/control/monad.scm b/control/monad.scm index f51289d..2ef230c 100644 --- a/control/monad.scm +++ b/control/monad.scm @@ -1,14 +1,16 @@ (define-module (control monad) #:use-module (control monad procedures) + #:use-module (ice-9 match) #:export (do) #:re-export (>> >>=)) (define-syntax do (syntax-rules (<- let =) - ((_ let var = val rest ...) - (let ((var val)) (do rest ...))) - ((_ var <- val rest ...) - (>>= val (lambda (var) (do rest ...)))) + ((_ let ptrn = val rest ...) + (match val + (ptrn (do rest ...)))) + ((_ ptrn <- val rest ...) + (>>= val (match-lambda (ptrn (do rest ...))))) ((_ a) a) ((_ token rest ...) (>> token (do rest ...))))) |