{{ }} digraphs were introduced in j902
https://code.jsoftware.com/wiki/System/ReleaseNotes/J902
See
https://code.jsoftware.com/wiki/Vocabulary/DirectDefinitionOn Wed, 20 Jan 2021, 22:32 Arnab Chakraborty, <[email protected]> wrote: > I could not find any doc on {{ and }} as Raul has used. Any pointer? > > On Tue, 19 Jan 2021, 22:26 Raul Miller, <[email protected]> wrote: > > > insertbefore=:{{ > > 'a b'=. y > > (x{.b),a,x}.b > > }} > > > > insertafter=: {{ (x+1) insertbefore y }} > > > > 2 insertafter "1 [ 10;"1 n > > 0 1 2 10 3 4 > > 5 6 7 10 8 9 > > > > FYI, > > > > -- > > Raul > > > > On Tue, Jan 19, 2021 at 11:51 AM Skip Cave <[email protected]> > > wrote: > > > > > > 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 > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
