将数组转换为IEnumerable< T> [英] Converting Array to IEnumerable<T>

问题描述

令我惊讶的是，我得到以下语句：

To my surprise, I get the following statement:

public static IEnumerable<SomeType> AllEnums 
  => Enum.GetValues(typeof(SomeType));

来抱怨无法将 System.Array em> System.Collection.Generic.IEnumerable 。我认为后者是从前者继承的。显然我错了。

to complain about not being able to convert from System.Array to System.Collection.Generic.IEnumerable. I thought that the latter was inheriting from the former. Apparently I was mistaken.

因为我不能LINQ它或 .ToList 它，我不知道如何正确处理。我宁愿避免显式转换，并且因为它是一个枚举的值，我不认为像SomeType - 它将是很有用的，既不是。

Since I can't LINQ it or .ToList it, I'm not sure how to deal with it properly. I'd prefer avoiding explicit casting and, since it's a bunch of values for an enum, I don't think as SomeType-ing it will be of much use, neither.

推荐答案

一般的 Array 基类不是类型，所以不实现任何类型特定的接口;然而，可以直接投射向量 - GetValues 实际返回一个向量;所以：

The general Array base class is not typed, so it does not implement any type-specific interfaces; however, a vector can be cast directly - and GetValues actually returns a vector; so:

public static IEnumerable<SomeType> AllEnums
    = (SomeType[])Enum.GetValues(typeof(SomeType));

或更简单：

public static SomeType[] AllEnums 
    = (SomeType[])Enum.GetValues(typeof(SomeType));

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