centar, `%*`, %cntr

Pull with changes

%* is a synthetic rune that pulls the wing p from a door q with changes r, terminated by ==. %* is used to specify changes in the context of a wing when it is pulled.

Produces

Twig: [%cntr p=wing q=twig r=tram]

Sample

p is a ++wing. q is a ++twig. r is a ++tram.

Tall form

%*  p  q
  p.i.r  q.i.r
  p.i.t.r  q.i.t.r
==

Wide form

%*(p q p.i.r q.i.r, p.i.t.r q.i.t.r)

Irregular form

None

Examples

/~zod/try=> =a  42
new var %a
/~zod/try=> =b  |%
    ++  mult  (mul 2 a)
    --
new var %b
/~zod/try=> mult.b
84
/~zod/try=> %*(mult b a 2)
4

Here we add a variable a to our context, and a door b with a wing ++multthat depends on a. Calling ++mult produces 84, and we can use %* to replace a in the context of mult.b with 2 to simply produce 4.

1.1 KiB Raw Blame History

centar, %*, %cntr

See also