Mercury is an open source programming language created in 1995 by Zoltan Somogyi.
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Mercury is a functional logic programming language made for real-world uses. The first version was developed at the University of Melbourne, Computer Science department, by Fergus Henderson, Thomas Conway, and Zoltan Somogyi, under Somogyi's supervision, and released on April 8, 1995. Mercury is a purely declarative logic programming language. Read more on Wikipedia...
:- module hello.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
main(!IO) :-
io.write_string("Hello World\n", !IO).
% "Hello World" in Mercury.
% This source file is hereby placed in the public domain. -fjh (the author).
:- module hello.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
main(!IO) :-
io.write_string("Hello, world\n", !IO).
:- module fib.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
:- import_module int.
:- func fib(int) = int.
fib(N) = (if N =< 2 then 1 else fib(N - 1) + fib(N - 2)).
main(!IO) :-
io.write_string("fib(10) = ", !IO),
io.write_int(fib(10), !IO),
io.nl(!IO).
% Could instead use io.format("fib(10) = %d\n", [i(fib(10))], !IO).| Feature | Supported | Token | Example |
|---|---|---|---|
| Strings | ✓ | " | "Hello world" |
| Print() Debugging | ✓ | io.write_string | |
| Comments | ✓ | % A comment |
|
| Line Comments | ✓ | % | % A comment |
| Semantic Indentation | X |