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recursion
<mathematics, programming> When a function (or procedure)
calls itself. Such a function is called "recursive". If the
call is via one or more other functions then this group of
functions are called "mutually recursive".
If a function will always call itself, however it is called,
then it will never terminate. Usually however, it first
performs some test on its arguments to check for a "base case"
- a condition under which it can return a value without
calling itself.
The canonical example of a recursive function is
factorial:
factorial 0 = 1
factorial n = n * factorial (n-1)
Functional programming languages rely heavily on recursion,
using it where a procedural language would use iteration.
See also recursion, recursive definition, tail recursion.
[Jargon File]
(1996-05-11)
Try this search on OneLook / Google
Nearby terms:
Record Separator « rectangle slinger « recurse « recursion » recursion theory » recursive » recursive acronym
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
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