C# 中的 HashSet 是否有等效的 AddRange
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Is there an AddRange equivalent for a HashSet in C#
提问by Stefanos Kargas
With a list you can do:
使用列表,您可以执行以下操作:
list.AddRange(otherCollection);
There is no add range method in a HashSet. What is the best way to add another collection to a HashSet?
HashSet 中没有添加范围方法。将另一个集合添加到 HashSet 的最佳方法是什么?
采纳答案by quetzalcoatl
For HashSet<T>
, the name is UnionWith
.
对于HashSet<T>
,名称是UnionWith
。
This is to indicate the distinct way the HashSet
works. You cannot safely Add
a set of random elements to it like in Collections
, some elements may naturally evaporate.
这是为了表明不同的HashSet
工作方式。你不能Add
像 in那样安全地使用一组随机元素Collections
,有些元素可能会自然蒸发。
I think that UnionWith
takes its name after "merging with another HashSet
", however, there's an overload for IEnumerable<T>
too.
我认为UnionWith
它的名字来源于“与另一个合并HashSet
”,但是,它也有一个过载IEnumerable<T>
。
回答by RoadieRich
This is one way:
这是一种方式:
public static class Extensions
{
public static bool AddRange<T>(this HashSet<T> source, IEnumerable<T> items)
{
bool allAdded = true;
foreach (T item in items)
{
allAdded &= source.Add(item);
}
return allAdded;
}
}