This is a brief demo example of an Elucidative Program
Composition of two or more functions can be done by the function compose. The function handles two special cases first, namely the trivial composition of a single function , the typical composition of two functions , and composition of more than two functions .
It is some times useful to be able to generate a 'less-than-or-equal' function from an explicitly given enumeration ordering. This is done by the function generate-leq. Values of the enumeration-order are supposed to occur as constituents of some data structure. The selector function selector accesses the enumertion values within the data structure. Enumeration values are compared using eq-eq?, which is an optional parameter of generate-leq . Notice the pattern used for handling of optional parameters, and in particular the use of the function optional-parameter.
In this section we demonstrate a few additional topics
It is - of course - possible to link applied names in one source program to the defining name in another source file. See the list other-source-list which refers to the defined names in another source program.