Best of the New Year to all,
I'm having some problems getting a handle on boxing and unboxing. I am still
in the novice stages with J - I don't have much time to devote to the
language, unfortunately, and sometimes go a few weeks at a time without
looking at it. The holidays gave me an opportunity to spend some hours to
tackle J again.
I usually take a set of basic problems to tackle when learning a new
language, and one of them is splitting a string on another string, no
regular expressions involved. Example:
'tr' split 'tratatrittetratas'
should return
'ata' 'itte' 'atas'
I have the J code to the point that for the above example I generate
--------------------------------
| 2 3 4 | 7 8 9 10 | 13 14 15 16 |
--------------------------------
and any of the three boxes, when unboxed and applied to the string with {,
gives me the substring I need.
What's causing me problems is fills. I have not happened on a combination of
< and > that would allow me to return
---------------------------
| a t a | i t t e | a t a s |
---------------------------
Instead I might get
atat
itte
atas
which is frustrating. Any ideas?
AHS
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