# C# Operators
###### tags: `C#` | August 27, 2019
## 01. Member Access Operator .
1. use the ```.``` token to access a member of a namespace or a type

###### eg:
###### 1. *Use . to access a nested namespace within a namespace*

using System.Collections.Generic;

###### 2. *Use . to form a qualified name to access a type within a namespace*

System.Collections.Generic.IEnumerable<int> numbers = new int[] { 1, 2, 3 };

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###### 3. *Use . to access type members, static and non-static*

var constants = new List<double>();
constants.Add(Math.PI);
constants.Add(Math.E);
Console.WriteLine($"{constants.Count} values to show:");
Console.WriteLine(string.Join(", ", constants));
// Output:
// 2 values to show:
// 3.14159265358979, 2.71828182845905

2. Can also be used to access an extension method.