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From: | Elias Mårtenson |
Subject: | Re: [Bug-apl] String element of general array |
Date: | Fri, 9 May 2014 13:42:39 +0800 |
The outer product approach is APL 1.
In APL 2, you can enclose the search term and test for membership in the
list:
ll←'abd' 'defgh' 'ij' 'klm'
ll∊⊂'ij'
0 0 1 0
ll∊⊂'foo'
0 0 0 0
On Thu, 2014-05-08 at 22:56 -0500, Blake McBride wrote:
> Forgive the question, but my experience is only with the original APL
> and not APL2. I have a (general array) vector. Each element is a
> string vector. For example:
>
>
> x←'abcd' 'efg' 'hijkl'
>
>
> Now, if I have:
>
>
> y←'hijkl'
>
>
> z←'hhh'
>
>
> How can I tell if y is in x? How can I tell if z is in x?
>
>
> I can easily do this with a loop, but that's not APL.
>
>
> This is as far as I've gotten:
>
>
> x∘.=y
>
>
> (I am one function away from completing a keyed files system for GNU
> APL!)
>
>
> Thanks!
>
>
> Blake
>
>
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