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From: "Ehud Lamm" <mslamm@huji.ac.il>
Newsgroups: comp.lang.ada
Subject: Re: array of operations
Date: Tue, 10 Sep 2002 19:09:55 +0200
Organization: Ehud Lamm
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"Mark Biggar" <mark.a.biggar@attbi.com> wrote in message
news:3D7E0EB1.2070708@attbi.com...
> marco wrote:
> > Do you know if there is some way of bulding up arrays of functions
and/or
> > procedures?...
>
> Sure, Ada allows for access types to functions and procedures so you
> construct an array of those.

Notice that all the procedures must have the same parameter profile. There
are cases where this isn't what you want.
There are also nesting issues (you can't have a top level array linking to
nested subroutines) [Note to language lawyers: The last sentence was not
meant to be a formal definition...]

So in many cases you may decide (after thinking about "access procedure" and
"access function") to use a dispatching routine that is invoked with an
"opcode" (operation code) and calls the appropriate routine.

Ehud