urbit/pub/doc/hoon/runes/wt/wtgl.md

wutgal, ?<, %wtgl

Assert no

?< is a synthetic hoon that produces q, asserting that p is no (|, 1).

See also

wutgar, ?>, %wtgr

Produces

Twig: [%wtgl p=twig q=twig]

Sample

p and q are twigs.

Tall form

?<  p
    q

Wide form

?<(p q)

Irregular form

None

Examples

~zod/try=> ?<(=(0x1 0) %foo)
%foo
~zod/try=> ?<(=(0x1 1) %foo)
! exit