urbit/base/pub/doc/hoon/runes/bc/bctr.md
2015-04-29 18:48:45 -04:00

39 lines
513 B
Markdown

[buctar `$*` %bctr](#bctr)
==========================
Default value
`$*`, is a synthetic rune that produces the [bunt]() (default value) of
a tile as a compile-time constant if possible. If it is not possible,
then it is produced dynamically.
Produces
--------
[Twig](): `[%bctr p=tile]`
Tall form
---------
$* p
Wide form
---------
$*(p)
Irregular form
--------------
*p
Examples
--------
~zod/try=> *@t
''
~zod/try=> *[@p @ux]
[~zod 0x0]
~zod/try=> *(list ,@)
~