What's the best way to prevent a class from being instantiated?
3 ビュー (過去 30 日間)
古いコメントを表示
I want this class to be completely static and can never be instantiated. It only contains a bunch of static methods and constants.
0 件のコメント
採用された回答
Steven Lord
2022 年 2 月 23 日
Make it Abstract.
classdef (Abstract) purelyStatic
methods(Static)
function y = getPi()
y = pi;
end
end
properties(Constant)
theAnswerToLifeTheUniverseAndEverything = 42;
end
end
Use it as:
P = purelyStatic.getPi()
A = purelyStatic.theAnswerToLifeTheUniverseAndEverything
Trying to instantiate it will error.
x = purelyStatic
2 件のコメント
Steven Lord
2022 年 2 月 24 日
Make it Sealed as well. That still wouldn't prevent someone from editing the class file but there isn't really a way to make it so it can never, ever, ever be modified. At least not while butterflies exist :)
classdef (Abstract, Sealed) purelyStatic
その他の回答 (0 件)
参考
カテゴリ
Help Center および File Exchange で Loops and Conditional Statements についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!