抽象データ型（ADT）
An 抽象データ型（ADT） is a theoretical concept in コンピュータ科学 used to define データ構造 based on their behavior from the point of view of a user, specifically the operations that can be performed on the data and the types of values it can hold. Unlike concrete データタイプ, which specify how data is stored and manipulated at a low level, ADTs focus on what operations are available and how they can be used.
例えば、AI スタック is an ADT that allows operations like push (adding an item) and pop (removing the most recently added item). The user of a stack does not need to know how these operations are implemented; they just need to understand that the stack operates on a last-in, first-out (LIFO) principle.
ADTはプログラマーや開発者が design systems and applications by providing a clear interface for data manipulation, thus promoting better code organization and separation of concerns. They are often implemented in various プログラミング言語 using classes, interfaces, or modules, which encapsulate the data and the operations that can be performed on it.
要約すると、ADTは高レベルな方法でデータ型を定義する手段を提供しますが、これらのデータ型の実装方法を規定するものではありません。この抽象化により、実装の柔軟性が保たれつつ、操作の一貫性と信頼性が確保されます。