recursive — Recursively apply a transform, and possibly a secondary transform
recursive ( primary-transform )
recursive (primary-transform,secondary-transform)
Sometimes you would like a transform to return an entire sub-tree
of hierarchical data related to a program object. BBQ provides
some special-purpose transforms (such as recursive derived classes) for this purpose; this transform operator
lets you recursively apply an arbitrary transform.
Use care when using this operator, since you might accidentally
specify a recursion that does not end (i.e. recursive ( same )).
To prevent a hang or crash, the operator will stop recursing at an
arbitrary depth (50).
The effect of this transform operator can be most concisely described recursively:
primary-transform to a set, combined with the result
of applying this transform to that result.
primary-transform to the set,
combined with the result of applying this transform to the result
of applying secondary-transform to the result of applying
primary-transform to the set.
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