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This file is part of Logtalk https://logtalk.org/ SPDX-FileCopyrightText: 1998-2023 Paulo Moura <pmoura@logtalk.org> SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

% start by loading the "assign_parameters" category and the example:

| ?- logtalk_load(assign_parameters(loader)). ...

% rectangle example (don't use message broadcasting syntax in order to workaround a XSB parser bug):

| ?- rectangle(2, 3, S)::init, rectangle(2, 3, S)::position(X0, Y0), rectangle(2, 3, S)::move(3, 7), rectangle(2, 3, S)::position(X1, Y1), rectangle(2, 3, S)::move(2, 5), rectangle(2, 3, S)::position(X2, Y2).

X0 = 0 Y0 = 0 X1 = 3 Y1 = 7 X2 = 2 Y2 = 5

Yes

% finite state machine example:

| ?- {fsm(T, I, F)}::recognise([0,1,1,2,1,2,0]).

red-0-red red-1-green green-1-yellow yellow-2-red red-1-green green-2-red red-0-red

T = [red-0-red, red-1-green, red-2-red, yellow-0-red, yellow-1-green, yellow-2-red, green-0-yellow, ... -... -yellow, ... -...] I = red F = [red]

Yes

% finite state machine example:

| ?- {fsm(T, I, F)}::recognise([0,1,1,2,1,2,1,0]).

red-0-red red-1-green green-1-yellow yellow-2-red red-1-green green-2-red red-1-green green-0-yellow backtracking... backtracking... backtracking... backtracking... backtracking... backtracking... backtracking... backtracking...

No