mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-21 13:51:50 +03:00
66 lines
1.1 KiB
Markdown
66 lines
1.1 KiB
Markdown
|
[wutket, `?^`, %wtkt](#wtkt)
|
||
|
|
============================
|
||
|
|
|
||
|
|
Is bunt, inverse
|
||
|
|
|
||
|
|
`?^` is a synthetic rune that evaluates `r` if `p` is equal to the
|
||
|
|
[bunt]() for its [tile](), otherwise `q` is evaluated.
|
||
|
|
|
||
|
|
Produces
|
||
|
|
--------
|
||
|
|
|
||
|
|
Twig: `[%wtkt p=wing q=twig r=twig]`
|
||
|
|
|
||
|
|
Sample
|
||
|
|
------
|
||
|
|
|
||
|
|
`p` is a [`++wing`](). `q` and `r` are [twig]()s.
|
||
|
|
|
||
|
|
Tall form
|
||
|
|
---------
|
||
|
|
|
||
|
|
?^ p
|
||
|
|
q
|
||
|
|
r
|
||
|
|
|
||
|
|
Wide form
|
||
|
|
---------
|
||
|
|
|
||
|
|
?^(p q r)
|
||
|
|
|
||
|
|
Irregular form
|
||
|
|
--------------
|
||
|
|
|
||
|
|
None
|
||
|
|
|
||
|
|
Examples
|
||
|
|
--------
|
||
|
|
|
||
|
|
~zod/try=> =(*@tas "")
|
||
|
|
%.y
|
||
|
|
~zod/try=> ?^ ""
|
||
|
|
%full
|
||
|
|
%empty
|
||
|
|
%empty
|
||
|
|
~zod/try=> ?^ "asd"
|
||
|
|
%full
|
||
|
|
%empty
|
||
|
|
%full
|
||
|
|
|
||
|
|
Here we show that `*@tas`, the bunt of `@tas` is equivalent to the empty
|
||
|
|
[`++tape`]() `""`, then use it in two `?^` cases.
|
||
|
|
|
||
|
|
~zod/try=> *(unit)
|
||
|
|
~
|
||
|
|
~zod/try=> ?^ `(unit)`~
|
||
|
|
%full
|
||
|
|
%empty
|
||
|
|
%empty
|
||
|
|
~zod/try=> ?^ `(unit)`[~ u=20]
|
||
|
|
%full
|
||
|
|
%empty
|
||
|
|
%full
|
||
|
|
|
||
|
|
Similar to the above case, we show the bunt of a [`++unit`](), which is
|
||
|
|
`~`, and test against it.
|