Molds are data types in Hoon. Atom auras like
@ud are molds, as are more complex structures like
(map @tas (pair @t @ux)), etc. Raw values may be type-cast to a mold, and molds can also be called as functions to coerce a value to its type (this is called "molding" or "clamming"). Molds may be create with "mold builder" functions, or with
Hoon school: types: A lesson on molds.
$) rune reference: Details on the runes that can create molds.