有一个功能等价的PHP array_merge在C＃ [英] is there a function equivalent of php array_merge in c#

问题描述

如果没有什么创建它的最好办法

If not what's the best way to create it ?

请注意：？合并不仅是追加，它fusionned是相同的密钥

Note: merging is not just appending, it fusionned keys that are the same.

推荐答案

此功能列表元素的存在。数组是固定在C＃中的宽度物品，所以你不能没有创建新阵列修改尺寸。然而，列表是一个不同的故事。你可以这样做：

This functionality exist on a List element. Arrays are fixed width items in C#, so you can't modify the size without creating a new array. However, Lists are a different story. You can do:

List<int> sample = oldList.AddRange(someOtherList);
// sample contains oldList with all elements of someOtherList appended to it.

此外，使用LINQ它十分容易列表和阵列之间进行转换以

Additionally, with LINQ it's trivially easy to convert between List and Array with the

.ToList()
.ToArray()

扩展方法。如果你想做到这一点与数组的一个不确定的数字，你可以做这样的事情：

extension methods. If you want to do that with an indeterminate number of arrays, you could do something like this:

public static class ArrayExtensions
{
     public static T[] MergeArrays<T>(this T[] sourceArray, params T[][] additionalArrays)
     {
          List<int> elements = sourceArray.ToList();

          if(additionalArrays != null)
          {
               foreach(var array in additionalArrays)
                   elements.AddRange(array.ToList());
          }

          return elements.ToArray();
     }
}

和调用：

int[] mergedArray = initialArray.MergeArrays(array1, array2, array3 /* etc */);

这篇关于有一个功能等价的PHP array_merge在C＃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！