A goto-like usage of a function
grante at visi.com
Fri Jul 30 03:10:25 CEST 2004
In article <64ednb5vPfE7yJTcRVn-pw at powergate.ca>, Peter Hansen wrote:
> Never having used tail-recursive languages, I won't pretend to
> be any kind of expert on proper style there...
> I'm curious though. Is it considered perfectly acceptable style
> to implement a "pure loop" in the form of recursion in a tail-
> recursive language,
Yes. In Scheme, for example, there is some sort of looping
construct, but it's considered a nasty, ugly wart on the
language. In Scheme you're "supposed" to use tail recursion
where you would use a "for" loop in Python.
> The acceptance test would probably be: if a mature programmer
> in the language in question encountered a
> loop-done-as-recursion in code from, say, a junior programmer,
> would she refactor it to use a more conventional control
> structure (e.g. while, or for) or would she not give it a
> second thought?
The latter. In fact, if a mature programmer found a looping
construct, he would be likely to refactor it into
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