Re: "unbound location string->number"

[Per Bothner <per at bothner dot com>]

Steve Smith wrote:
> I've done some more investigation on this and there's definitely
> something funny going on.  To test I've created the following Scheme
> and Java classes:
>
> ;; test-inline.scm
>
>   (define-simple-class <SchemeTest> (<java.lang.Object>)
>
>      ((decode (number :: <java.lang.String>))
>       :: <java.lang.Integer>
>       (let ((num (string->number "1234")))
>         (<java.lang.Integer>:new num))))

You're thinking this defines a class SchemeTest.  It does that,
but more precisely it exports a name <SchemeTest> from a module.
And the value of the name is different for each "instance" of the
module.  This matters when there are module-level variables.

> // JavaTest.java
>
>   import java.lang.*;
>   import au.com.isay.test.SchemeTest;
>   
>   public class JavaTest {
>     public static void main(String []args)  {
>       SchemeTest scm = new SchemeTest();
>       System.out.println("Test run: " + scm.decode("1234") + "\n");
>     }
>   }
>
>
> # Compile                     
>   
>   /opt/kawa-snapshot/bin/kawa -P au.com.isay.test. -C test-inline.scm
>   javac -classpath . JavaTest.java

You almost certainly want to compile with --module-static or
--module-static-run.
--
	--Per Bothner
per@bothner.com   http://per.bothner.com/