adding (srfi 111)

This commit is contained in:
Alex Shinn 2017-03-26 22:02:43 +09:00
parent 806d92aa15
commit c08aa4e93b

8
lib/srfi/111.sld Normal file
View file

@ -0,0 +1,8 @@
(define-library (srfi 111)
(import (scheme base))
(export box box? unbox set-box!)
(begin
(define-record-type Box
(box value)
box?
(value unbox set-box!))))