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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

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% start by loading the design pattern sample implementations:

| ?- logtalk_load(design_patterns('behavioral/command/loader')). ...

% first, test the basic functionality for light:

| ?- light(l1)::turn_on.

The light(l1) is on yes

% commands are represented using parametric object identifiers

| ?- flip_up_command(light(l1))::execute.

The light(l1) is on yes

% use the client/invoker object to store_and_execute commands:

| ?- switch::( store_and_execute(flip_up_command(light(kitchen))), store_and_execute(flip_up_command(coffee_maker)) ).

The light(kitchen) is on The coffee_maker is on yes

| ?- switch::history.

flip_up_command(light(kitchen)) flip_up_command(coffee_maker) yes

| ?- switch::reply_history.

The light(kitchen) is on The coffee_maker is on yes