1. (x,y)$5 2. J arrays are homogeneous. So, you can not combine numbers and characters, for example. However, you can convert before combining, e.g. 'The number of seconds ',":secs. And of course you can box first before combining: (<'Seconds: '),<secs or 'Seconds: ';secs
On Wed, Apr 9, 2014 at 12:13 PM, Ray Zhao <[email protected]> wrote: > Hi all, I have two small questions: > 1. How do you use variables as such: > x y $ 5 > I have found many examples with actual nums such as 5 6 $ 6 and I know that > x y is a syntax error, but I'm not sure how to make it NOT a syntax error. > > 2. Can different types, when combined, only produce boxes? This is much > less of a concern for me but I think it's worth confirming: > One example is: > secs=.5 > 'The number of seconds '; secs > I have searched a little on the vocabulary site and all the examples that I > have seen with > (open) only unbox same types. , (append) also only appends > the same types too. > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
