C#集合集合? [英] C# Set collection?

问题描述

有谁知道在 C# 中是否有一个很好的等效于 Java 的 Set 集合?我知道您可以通过填充但忽略值来使用 Dictionary 或 HashTable 来模拟集合，但这不是一种非常优雅的方式.

Does anyone know if there is a good equivalent to Java's Set collection in C#? I know that you can somewhat mimic a set using a Dictionary or a HashTable by populating but ignoring the values, but that's not a very elegant way.

推荐答案

尝试 HashSet:

HashSet(Of T) 类提供高性能的集合操作.集合是不包含重复元素的集合，并且其元素没有特定的顺序......

The HashSet(Of T) class provides high-performance set operations. A set is a collection that contains no duplicate elements, and whose elements are in no particular order...

HashSet(Of T) 对象的容量是该对象可以容纳的元素数.HashSet(Of T) 对象的容量会随着元素添加到对象中而自动增加.

The capacity of a HashSet(Of T) object is the number of elements that the object can hold. A HashSet(Of T) object's capacity automatically increases as elements are added to the object.

HashSet(Of T) 类基于数学集合模型，并提供类似于访问 Dictionary(Of TKey, TValue) 或 Hashtable 集合.简单来说，HashSet(Of T) 类可以被认为是一个字典(Of TKey, TValue) 没有值的集合.

The HashSet(Of T) class is based on the model of mathematical sets and provides high-performance set operations similar to accessing the keys of the Dictionary(Of TKey, TValue) or Hashtable collections. In simple terms, the HashSet(Of T) class can be thought of as a Dictionary(Of TKey, TValue) collection without values.

HashSet(Of T) 集合未排序且不能包含重复元素...

A HashSet(Of T) collection is not sorted and cannot contain duplicate elements...

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