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compose
![\begin{lstlisting}[language=Scm,stepnumber=2]{}
(define compose (lambda (f g)
(lambda (x)
(f (g x)))))
\end{lstlisting}](img84.gif)
This abstraction is a functional utility abstraction which
makes addition and multiplication of Church Numerals
a simple task, even if the understanding of this code might
not be that easy. `compose' belongs to the category of `higher
order functions' because it takes functions as arguments and
returns a new function composed of the two arguments.
See also section basic:compose.
Georg P. Loczewski
2004-03-05