How does one design a verb that inserts specific elements into a vector or
matrix?
For example, an "insertafter" verb would take one left argument, which is
the index of the array that the element is to be inserted after. The right
argument would be two boxed nouns. The first boxed noun is the set to be
inserted. The second boxed noun is the destination of the insertion.
2 insertafter 10;1 2 3 4 5
1 2 3 10 4 5
2 insertafter 10 11;1 2 3 4 5
1 2 3 10 11 4 5
Also may need insertbefore:
2 insertbefore 10;1 2 3 4 5
1 2 10 3 4 5
2 insertbefore 10 11;1 2 3 4 5
1 2 10 11 3 4 5
Higher ranks?
]n=.2 5$i.10
0 1 2 3 4
5 6 7 8 9
2 insertafter "1 [ 10;n
0 1 2 10 3 4
5 6 7 10 8 9
What would the code for insertbefore verb look like?
Skip Cave
Cave Consulting LLC
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
