C# - 字节数组 - byte[] - 有简单的比较器吗？

Question

我是不是忘记了显而易见的东西，还是 "manual" 比较器是最好的选择？

基本上，我只想比较类型（小）字节数组的内容。如果所有字节都匹配，则结果应为真，否则为假。

我原以为 Array.Equals 或 Buffer.Equals 会有所帮助。

演示代码：

  var a = new byte[]{1, 2, 3, 4, 5};
  var b = new byte[]{1, 2, 3, 4, 5};
  Console.WriteLine(string.Format("== : {0}", (a == b)));
  Console.WriteLine(string.Format("Equals : {0}", a.Equals(b)));
  Console.WriteLine(string.Format("Buffer.Equals : {0}", Buffer.Equals(a, b)));
  Console.WriteLine(string.Format("Array.Equals = {0}", Array.Equals(a, b)));
  Console.WriteLine(string.Format("Manual_ArrayComparer = {0}", ArrayContentsEquals(a, b)));

手动功能：

/// <summary>Returns true if all elements of both byte-arrays are identical</summary>
public static bool ArrayContentsEquals(byte[] a, byte[] b, int length_to_compare = int.MaxValue)
{
  if (a == null || b == null) return false;
  if (Math.Min(a.Length, length_to_compare) != Math.Min(b.Length, length_to_compare)) return false;
  length_to_compare = Math.Min(a.Length, length_to_compare);
  for (int i = 0; i < length_to_compare; i++) if (a[i] != b[i]) return false;
  return true;
}

Answer 1

您正在寻找 SequenceEqual 方法。

a.SequenceEqual(b);

Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type.

C# - 字节数组 - byte[] - 有简单的比较器吗？

C# - byte array - byte[] - Is there a simple comparer?

c#

arrays

equality