Scheme (was: Walking the DOM)

[John Cowan]

Russ McManus wrote:

> My understanding is that R5RS includes 'do' in the language, which
> is a primitive, iterative construct.

"do" is iterative but not primitive: it is defined in R5RS
using a high-level macro (now the only kind of macro), using
tail iteration.

The *primitive* constructs are application, "if", "set!",
"lambda", and variable reference.

-- 
John Cowan	http://www.ccil.org/~cowan		cowan at ccil.org
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

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