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From: mg@asp.camb.inmet.com (Mitch Gart)
Subject: Re: Addressing functions
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Date: Wed, 14 Dec 1994 12:33:30 GMT
Date: 1994-12-14T12:33:30+00:00
List-Id: <comp.lang.ada>

Bill Buckley (wbuckley@earth) wrote:
:  
: High Ada lovers, 

Presumably you mean "Hi" not "High" but who knows?

: I've got a question on storing subprogram address in 
: Ada.  I know I can get the address of a subprogram via the ADDRESS 
: attribute in Ada but can not figure a way to use it.  I don't have any 
: immediate need for such a procedure but it has my old C-C++ courisity 
: wondering.  For instance if I were to have an array of subprogram addresses
: A(1..2) => (1 => Print1'ADDRESS,
:             2 => Print2'ADDRESS);
: how could I implement the calling these functions (note : I know the 
: syntax above is wrong but can't get this simple editor to back up to 
: change it).  I have heard from several other Ada programmers that this 
: may not be possible. 

: --
: Bill Buckley :-)

Not possible in Ada '83, at least not possible using standard Ada.
Your compiler vendor may provide a non-standard way to do it.

Ada 95 has "access procedure" and "access function" objects which
will do what you want.

	Mitch Gart