urbit/docs/pub/doc/hoon/runes/ts/tsbr.md
Galen Wolfe-Pauly ec2b8f56fd doc -> docs
2015-02-24 11:33:50 -08:00

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[tisbar, `=|`, %tsbr](#tsbr)
============================
Bunt to subject
`=|` is a synthetic hoon that pushes the [bunt](), or default value, of
`p` on the subject and sends it to `q`.
Produces
--------
Twig: `[%tsbr p=tile q=twig]`
Sample
------
`p` is a [tile](). `q` is a [twig]().
Tall form
---------
=| p
q
Wide form
---------
=|(p q)
Irregular form
--------------
None
Examples
--------
~zod/try=> =|(a=@p a)
~zod
Here we use `=|` to generate the default value of a `@p`, which is
`~zod`.
/~zod/try=>
=| a=[b=@ c=@]
[+(b.a) +(+(c.a))]
[1 2]
Here we add the bunt of `a=[b=@ c=@]` and perform a very basic operation
on it.