thanks.
In future I need to consider what kind of results I get. In my first few
attempts, I was getting a one element list as a result when searching for an
index in a vector. I just stumbled on the right solution accidentally when
reading the email in [email protected]
thanks
Raul Miller-4 wrote:
>
> On Nov 23, 2007 6:28 PM, efittery <[EMAIL PROTECTED]> wrote:
>> Still confused, but a little happier.
>
> In another language, the values which in J are expressed as
> ,2
> and
> 2
> would probably have different data types.
>
> The first expression returns a one element list (array) containing the
> number 2.
>
> The second expression returns the number 2.
>
> For example, in C, you might write:
> int a[]= {2}; /* this is sort of like ,2 in J */
> int b= 2; /* this is sort of like 2 in J */
>
> When you add or subtract lists, they have to be the same length,
> or you get a length error.
>
> Values which do not have a shape automatically get replicated
> as many times as needed.
>
> (Actually, the rules are somewhat more useful than this. But
> this should get you started.)
>
> --
> Raul
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
>
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