Copyright © 2001-2005 Oren Ben-Kiki, Clark Evans, Brian Ingerson
This specification is a draft reflecting consensus reached by members of the yaml-core mailing list. Any questions regarding this draft should be raised on this list.
N/A (single format).
Specify the default value of a mapping.
=” key is used to denote
the "default value" of a mapping. In some cases, it is useful to
evolve a schema so that a scalar value is replaced with a mapping.
A processor may present a "scalar value" method that provides the
value directly if the node is a scalar or returns the value of
this key if the node is a mapping. If applications only access the
scalar value through this interface then the schema may freely
grow over time replacing scalar values with richer data constructs
without breaking older processing systems.