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urbit/base/pub/doc/hoon/runes/wt/wtpt.md
Anton Dyudin 6cbb6b060d Revert "remove docs for demo", "remove odds and ends", "demo network", "DEMO ONLY: root beak as %demo.", "DEMO ONLY: don't show doznec flapping.", "Prinrtf."
This reverts commit 8e1e40d75b3ab15c194b6bf9570f3edc46e2de58.
This reverts commit f073c490f9fd7c5abc033af4857df92229877de7.
This reverts commit f187d2d7e01a54823f3e979af9bbd148b398e7e9.
This reverts commit bc272862a73cfce1b118586ca39d3a377d841f1b.
This reverts commit 30a397513f8890a3406dc7ab91c6e067e3bbfbbb.
This reverts commit 4fc6856fb50d88c20a0f533392ca606641c5f38f.

Conflicts:
	urb/urbit.pill
	urb/zod/base/lib/drum.hoon
2015-06-15 18:10:02 -07:00

663 B

wutpat, ?@, %wtpt

If atom

?@ is a synthetic rune that produces q if p is an atom, r otherwise.

Produces

Twig: [%wtpt p=wing q=twig r=twig]

Sample

p is a ++wing. q and r are twigs.

Tall form

Kingside:

?@  p
  q
r

Wide form

?@(p q r)

Irregular form

None

Examples

~zod/try=> ?@(~ 1 2)
! mint-vain
! exit
~zod/try=> ?@(%ha 1 2)
1
~zod/try=> ?@("" 1 2)
1
~zod/try=> ?@("a" 1 2)
2
~zod/try=> ?@([1 1] 1 2)
! mint-vain
! exit
~zod/try=> ?@(`*`[1 1] 1 2)
2