[armedbear-devel] ABCL introductory user documentation
paul.reiners at gmail.com
Thu Jul 30 11:23:25 UTC 2009
Thanks! I'll fix that up when I get home from work tonight.
On Jul 30, 2009, at 2:48 AM, Alessio Stalla wrote:
> On Thu, Jul 30, 2009 at 2:38 AM, Paul
> Reiners<paul.reiners at gmail.com> wrote:
>> Some introductory user documentation I wrote on ABCL if anyone's
>> It's spread across a bunch of slides right now, because I first
>> prepared it as a multi-slide presentation. I think I want to combine
>> it all into one HTML page later this week when I get around to it.
>> the very least, I want to give each slide a meaningful title so that
>> the Table of Contents is more meaningful.
>> Any criticism, constructive or destructive, is welcome.
> 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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