Aldor - Programming language

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Aldor is an open source programming language created in 1990 by Richard Dimick Jenks and Barry Trager and Stephen Watt and James Davenport and Robert Sutor and Scott Morrison.

#672on PLDB

34Years Old

Aldor is a programming language. It is the successor of A# as the extension language of the Axiom computer algebra system. Aldor combines imperative, functional, and object-oriented features. Read more on Wikipedia...

Aldor website
Aldor Wikipedia page
Aldor first developed in Western University
Aldor on HOPL
There is 1 Jupyter Kernel for Aldor
aldor.org was registered in 2000
See also: (5 related languages)Linux, Solaris, Pascal, Haskell, Python

Example from Wikipedia:

#include "aldor"
#include "aldorio"

import from Integer, String;

bob(n: Integer): String == {
    b: String := " bottle";

    if n ~= 1 then b := b + "s";
    b + " of beer";
}

main(): () == {
    n: Integer := 99;
    otw: String := " on the wall";

    -- refrain
    while n > 0 repeat {
        stdout << n << bob(n) << otw << ", " << n << bob(n) << "." << newline;
        stdout << "Take one down and pass it around, ";
        n := n - 1;
        if n > 0 then stdout << n;
        else stdout << "no more";
        stdout << bob(n) << otw << "." << newline;
        stdout << newline;
    }

    -- last verse
    stdout << "No more" << bob(n) << otw << ", no more" << bob(n) << "." << newline;
    stdout << "Go to the store and buy some more, ";
    n: Integer := 99;
    stdout << n << bob(n) << otw << "." << newline;
}

main();

Language features

Feature	Supported	Token	Example
Comments	✓		-- A comment
Line Comments	✓	--	-- A comment
Semantic Indentation	✓