(Answer before fixing code: I can probably fix it since I wrote it---probably a case of a missing definition wherein I forgot to start from a new J session.)

After tests: the verb worked without change, code run with ijconsole -jprofile . No problems detected. I probably left The "display" verb name unchanged because I left the monadic definition alone, merely including a dyadic definition. Anyway, I modified the rosettacode entry, perhaps it's slightly now?

On 10/04/2014 03:17 PM, programming-requ...@forums.jsoftware.com wrote:
Date: Sat, 4 Oct 2014 15:16:35 -0400
From: Raul Miller<rauldmil...@gmail.com>
To: Programming forum<programm...@jsoftware.com>
Subject: Re: [Jprogramming] How can I I box items in an array
Message-ID:
        <CAD2jOU-cBCqjcunZf04PVtrq6=gukvng4aybaobehbd1b7g...@mail.gmail.com>
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On Sat, Oct 4, 2014 at 10:56 AM, David Lambert<b49p23t...@stny.rr.com>  wrote:
>http://rosettacode.org/wiki/Maze_solving#J
That doesn't work.

    4 (display~ solve)@maze 9
|value error: maze

Can you fix it?

Thanks,

-- Raul

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