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26 lines
750 B
Mathematica
26 lines
750 B
Mathematica
% An example module to illustrate committed choice nondeterminism in Mercury.
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% In the standard "commutative" semantics, this program should print out
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% _either_
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%
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% Hello, World
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% or
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% Goodbye, World
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%
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% Which one it prints out is unspecified: the implementation can pick either.
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%
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% In the "strict sequential semantics" (enabled by the `--strict-sequential'
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% option to the Mercury compiler), it is guaranteed to print "Hello, World".
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% This source file is hereby placed in the public domain. -fjh (the author).
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:- module committed_choice.
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:- interface.
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:- import_module io.
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:- pred main(io__state::di, io__state::uo) is cc_multi.
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:- implementation.
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main --> io__write_string("Hello, world\n").
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main --> io__write_string("Goodbye, world\n").
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