Select可实现类似map的功能
> var arr = new byte[] { 2, 3, 4 }; > arr.Select(a => Convert.ToString(a, 16).PadLeft(2, '0')); > var hex = arr.Select(a => Convert.ToString(a, 16).PadLeft(2, '0')); > string.Join(" ", hex) "02 03 04"
Select可实现类似map的功能
> var arr = new byte[] { 2, 3, 4 }; > arr.Select(a => Convert.ToString(a, 16).PadLeft(2, '0')); > var hex = arr.Select(a => Convert.ToString(a, 16).PadLeft(2, '0')); > string.Join(" ", hex) "02 03 04"