[Jscheme-user] Printf in JScheme using sharkysoft-ware

[Timothy J. H. <tim...@ma...>]

Hi Geoffrey,

The Printf package from sharksoft you linked to is quite nice!

     http://sharkysoft.com/software/java/lava3/printf/

Just to double check that JScheme was working with that package I
ran the following example from their documentation page:
>
> for (int i = 3; i <= 20000; i *= 3)
>   Printf.out
>   ( "(%5d, %6.2f, %#10x)\n",
>     new Object[]
>     { new Integer(i),
>       new Float((float) Math.sqrt((double) i)),
>       new Integer(i * i)
>     }
>   );

Which translates in to JScheme pretty easily ...
> tim% java -jar jscheme.jar
> JScheme 7.2 (3/7/05 2:23 PM) http://jscheme.sourceforge.net
> > (load "elf/classpath.scm")
> $1 = #t
>
> > (addClasspathUrl "lava3-core.jar")
> $2 = #null
>
> > (addClasspathUrl "lava3-printf.jar")
> $3 = #null
>
> > (import "com.sharkysoft.printf.Printf")
> $4 = #t
>
> > (define (for n N by L)
>      (if (> n N) #f
>       (begin (L n) (for (+ n by) N by L))))
> $5 = (lambda for (n N by L)...)
>
> > (for 3 20000 3       (lambda(i)
>         (Printf.out   "(%5d, %6.2f, %#10x)\n"
>                             (list->array Object.class (list  i 
> (.floatValue (Math.sqrt i)) (* i i)
>        )))))
> (    3,   1.73,        0x9)
> (    6,   2.45,       0x24)
> (    9,   3.00,       0x51)
> (   12,   3.46,       0x90)
> (   15,   3.87,       0xe1)
> (   18,   4.24,      0x144)
> (   21,   4.58,      0x1b9)
> (   24,   4.90,      0x240)
> (   27,   5.20,      0x2d9)