C# 数组 byte[].Length 属性

Question

C# array byte[].Length property.

byte[] buffer = new...

When call int i = buffer.Length; I can see get_Length() in reflector,

What happens? Does it calculate actual length or just takes value (like property)???

Answer 1

byte[].Length will tell you the total number of elements in the array , so retrieving this property has a complexity of O(1) .

Answer 2

Arrays are fixed-length; the Length property returns an internal field in the array.
(It's O(1) , not O(n) )