c# - linq查询可从对象列表中返回不同的字段值(linq query to return distinct field values from a list of objects)

Question

The bounty expires tomorrow) . 赏金 明天到期) 。) Answers to this question are eligible for a +200 reputation bounty. 这个问题的答案有资格获得+200声望奖励。) KyleMit wants to reward an existing answer) : Thanks JulioCT for inlining the important bits from MoreLinq to unlock some of those extension methods without necessarily having to pull in the whole library - great answer! KyleMit希望奖励现有的答案) ：感谢JulioCT内联了MoreLinq的重要内容，以解锁其中的某些扩展方法，而不必引入整个库-很好的答案！)

class obj
{
    int typeID; //10 types  0-9 
    string uniqueString; //this is unique
}

Assume there is list with 100 elements of obj, but only 10 unique typeIDs.

(假设存在一个列表，其中包含obj的100个元素，但只有10个唯一的typeID。)
Is it possible to do write a LINQ query return the 10 unique ints from the list of objs?

(是否可以编写LINQ查询以从objs列表中返回10个唯一的整数？)

  ask by astronought translate from so

Answer 1

objList.Select(o=>o.typeId).Distinct()