Re: Macro expansion
Hans Aberg writes: > In the code below the 'loop' and 'begin' examples will execute the > while' loop, but if put into the body of a function, 'while' will not > run. So why, and how to fix it? > > Just copy and paste the examples below into guile. For the two first, > I get > 0123456789 > 0123456789done!3 > but for the third, the thunk, only > done!3 With my current Guile, scheme@(guile-user)> (version) $4 = "1.9.14.17-44f43" the third case behaves as you would expect: scheme@(guile-user)> ((lambda () (begin (loop ((define i 0)) (< i 10) ((set! i (+ i 1))) ((display i))) (display "done!") (+ 1 2) ) )) 0123456789done!$5 = 3 Regards, Neil
Re: inconsistency between let and lambda
Joo ChurlSoo writes: > The following behavior of `let' seems to be wrong. > > guile> (version) > "1.8.8" > guile> > (let ((go #f) > (alist '())) > (let ((a 1) (b (call-with-current-continuation (lambda (x) (set! go x) 2 > (set! alist (cons (cons a b) alist)) > (set! a 100) > (set! alist (cons (cons a b) alist)) > (if (< (length alist) 3) > (go 2) > (reverse alist > ((1 . 2) (100 . 2) (100 . 2) (100 . 2)) > guile>;; inconsistency between let and lambda > (let ((go #f) > (alist '())) > ((lambda (a b) > (set! alist (cons (cons a b) alist)) > (set! a 100) > (set! alist (cons (cons a b) alist)) > (if (< (length alist) 3) >(go 2) >(reverse alist))) >1 (call-with-current-continuation (lambda (x) (set! go x) 2 > ((1 . 2) (100 . 2) (1 . 2) (100 . 2)) > guile> For what it's worth, my current Guile, from Git post 1.9.14, gives ((1 . 2) (100 . 2) (1 . 2) (100 . 2)) for both cases. Neil
Re: Macro expansion
On 15 Jan 2011, at 21:39, Neil Jerram wrote: With my current Guile, scheme@(guile-user)> (version) $4 = "1.9.14.17-44f43" the third case behaves as you would expect: That is right, I used the stable versions 1.8.x, x = 7, 8. Unfortunately, when I try to install guile-1.9.14, I get the error below (Mac OS X 10.5.8 PPC G4). ld: duplicate symbol ___gmpz_abs in .libs/libguile_2.0_la-arbiters.o and .libs/libguile_2.0_la-alist.o
