[armedbear-devel] ABCL introductory user documentation

Paul Reiners paul.reiners at gmail.com
Sun Aug 2 17:15:12 UTC 2009

I just finished making the corrections you suggested:


I also improved the format a lot.

Would there be any interest in moving this over (or a modified version of
this over) to the Armed Bear web site as a start on User Documentation?


On Thu, Jul 30, 2009 at 2:48 AM, Alessio Stalla <alessiostalla at gmail.com>wrote:

> Good work! It's nice to see introductory documentation for abcl.
> Now the (constructive) criticism part :) I found an inaccuracy on
> Slide 10, regarding boxing/unboxing of values. Indeed boxing and
> unboxing is done automatically by ABCL. In your case, had you wrapped
> your ints in Fixnums instead of JavaObjects, you could have used them
> directly in Lisp. In general, since the user can't be expected to know
> how to map every Java type to Lisp and vice-versa, there are a couple
> of nice methods you can use in all cases:
> public static LispObject JavaObject.getInstance(Object, boolean)
> converts (or wraps) a Java object to a Lisp object, if the boolean is
> true (else it just wraps it in a JavaObject).
> public Object LispObject.javaInstance()
> converts (or unwraps) a Lisp object to Java. You can invoke this on
> any Lisp object, if it can't be converted, it will be returned as-is.
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