urbit/pub/docs/dev/hoon/runes/sg/sgbr.md

sigbar, ~|, %sgbr

Add to stacktrace

~| is a synthetic rune that presents the product of p in the stack trace if q crashes. The computation is only performed if needed.

Produces

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

Sample

p is a twig. q is a twig.

Tall form

~|  p
    q

Wide form

~|(p q)

Irregular form

None

Examples