Re: [Bug-apl] String element of general array

[Elias Mårtenson]

And of course, it can be made generic using ¨:

      x ← 'foo' 'bar' 'this' 'is' 'a' 'list' 'of' 'strings'

      x ≡¨ ⊂'bar'

0 1 0 0 0 0 0 0

Regards,

Elias

On 9 May 2014 13:35, David B. Lamkins <address@hidden> wrote:

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
>
>