urbit/pub/docs/dev/hoon/runes/wt/wtpm.md
Galen Wolfe-Pauly bb495844be doc -> docs
2015-10-20 10:51:45 -07:00

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wutpam, `?&`, %wtpm
============================
AND
`?&` is a synthetic hoon that computes the "and" of the loobeans in `p`.
`?&` is commonly used as a control-flow mechanism.
Produces
--------
Twig: `[%wtpm p=tusk]`
Sample
------
`p` is a [`++tusk`](), a list of [twig]()s.
Tall form
---------
?& i.p
i.t.p
i.t.t.p
==
Wide form
---------
?&(i.p i.t.p i.t.t.p)
Irregular form
--------------
&(i.p i.t.p i.t.t.p)
Examples
--------
~zod/try=> ?&(& &)
%.y
~zod/try=> &(& &)
%.y
~zod/try=> &(& |)
%.n
~zod/try=> &((gth 2 1) |)
%.n
~zod/try=> &((gth 2 1) &)
%.y