Should I Inherit from List for Custom Data Structures in C#?

C#custom data structure: Inheritance of the advantages and disadvantages of list

When designing the C#data structure, the developer may consider inheriting the

to combine the list function and additional attributes. However, there are some potential problems in this method and need to be carefully weighed.

List<T> The reason for avoiding the List

It is usually not recommended to inherit , mainly for the consideration of performance and public API conflict.

Highly optimized for list operations, inheritance may affect its efficiency. In addition, Microsoft controls , and subsequent modifications of its type may destroy existing code (if the public API is released).

List<T> The appropriate alternative of the custom collection List<T> List<T>

For custom sets, Microsoft recommends to inherit the

class instead of . Although provides a basic implementation, it provides greater flexibility and can be customized without affecting performance.

Packaging list

Comparison with the inherited Collection Collection<T> List<T> Collection<T>

Packaging refers to the creation of a separate class to package the

instance. This method improves transparency by providing direct access to the method, but it may also increase code complexity. Inheritance It requires manual implementation of the list function, which may be cumbersome, but it can ensure the complete control of the object design. The logic of the data structure indicates

List<T> When the data structure is represented as a "list with additional functions", it is necessary to consider the expected use of the actual situation and structure. For example, the classification of football teams as "player lists" may not accurately reflect its nature of its unique business objects with additional attributes. A more suitable representation method may include attributes that represent the team name, lineup and other related information. List<T> List<T> Inheritance List

Acceptability

Collection<T>

Under certain circumstances, inheritance

is acceptable. These cases usually include the function of expanding the or providing customized implementation of specific methods. However, it should be carefully considered and the potential consequences of public API should be considered carefully.

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