> Now, while ". in J seems not to want to return verbs or (and you
> CAN understand its reluctance), the Dyalog execute primitive is
> less picky ...
What happens with
execute each '{alpha+omega}' '+/' '.' '{omega}'
Just curious.
----- Original Message -----
From: Morten Kromberg <[EMAIL PROTECTED]>
Date: Thursday, December 27, 2007 6:59
Subject: RE: [Jchat] J readability
To: 'Chat forum' <[email protected]>
> Sorry, did not explain that very well. Unlike most APL systems,
> Dyalog allows the result of an expression to be a function/verb.
> So as J allows you to write:
>
> add =: +
>
> Dyalog allows
>
> add←+
> or add←{a+w}
>
> Now, while ". in J seems not to want to return verbs or (and you
> CAN understand its reluctance), the Dyalog execute primitive is
> less picky ("Explicit" in J seems a rather odd beast too, even
> the term "special syntax" doesn't quite seem sufficient to
> describe the workings of 3:0 :-)). So you can write:
>
> add←exec'{a+w}'
>
> ... after which:
>
> add/1 2 3
> 6
>
> ... and if you load up the dfns workspace which contains a "user-
> defined" rank operator (http://www.dyalog.dk/dfnsdws/n_rank.htm):
>
> 1 2 (add rank 0 1) 2 2
> {reshape} 10 20 30 40
> 11 21
> 32 42
>
> Morten
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