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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 example:

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

% first variant of the "diamond problem", defined in the "diamond1" source file:

| ?- d1::m.

Redefinition of method m/0 in object b1 yes

% second variant of the "diamond problem", defined in the "diamond2" source file:

| ?- d2::m.

Redefinition of method m/0 in object c2 yes

% third variant of the "diamond problem", defined in the "diamond3" source file:

| ?- d3::b3_m.

Redefinition of method m/0 in object b3 yes

| ?- d3::c3_m.

Redefinition of method m/0 in object c3 yes

| ?- d3::m.

Redefinition of method m/0 in object b3 yes

| ?- d4::m.

Redefinition of method m/0 in object b3 Redefinition of method m/0 in object c3 yes