[Jprogramming] Problem writing files

[Alex Giannakopoulos]

Ah, OK, Joe, I think I see what the problem is.
If I simply write a quoted string to the file it works fine. E.g.

1!:21 <'testfile'

30029424

    'hello' 1!:2 (30029424)
However I was trying to dump non-string variables, viz. tables, which is 
what it didn't like.  E.g.
     f1 =.1!:21 <'testfile'

     data =. >: i.10

     data 1!:2 f1
Just filled the file with binary data which I won't bother to put up here.

I was fooled because
    data 1!:2 (2)  NB. 2 => the screen
works

So is there a simple way to stringify my data tables so they can be 
streamed to file easily?

Thanks