A look at some of the new C# 6 features (not in any particular order).<\/p>\n
The Null-conditional operator<\/strong><\/p>\n Finally we have a way to reduce the usual<\/p>\n to something a little more succinct<\/p>\n Read-only auto properties<\/strong><\/p>\n In the past we’d have to supply a private setter for read only properties but now C# 6 allows us to do away with the setter and we can either assign a value to a property within the constructor or via a functional like syntax, i.e.<\/p>\n Using static members<\/strong><\/p>\n We can now “open” up static class methods and enums using the<\/p>\n String interpolation<\/strong><\/p>\n Finally we have something similar to PHP (if I recall my PHP from so many years back) for embedding values into a string. So for example we might normally write String.Format like this<\/p>\n Now we can instead write<\/p>\n Expression-bodied methods<\/strong><\/p>\n A move towards the way F# might write a single line method we can now simplify “simple” methods such as <\/p>\n can now be written as<\/p>\n The nameof expression<\/strong><\/p>\n Another improvement to remove aspects of magic strings, we now have the nameof expression. So for example we might have something like this<\/p>\n Now if we change the someArgument<\/em> variable name to something else then the nameof expression will correctly pass the new name of the argument to the ArgumentNullException.<\/p>\n However nameof is not constrained to just argument in a method, we can apply nameof to a class type, or a method for example.<\/p>\n\r\nif(PropertyChanged != null)\r\n PropertyChanged(sender, propertyName);\r\n<\/pre>\n
\r\nPropertyChanged?.Invoke(sender, propertyName);\r\n<\/pre>\n
\r\npublic class MyPoint\r\n{\r\n public MyPoint()\r\n {\r\n \/\/ assign with the ctor\r\n Y = 10;\r\n }\r\n\r\n \/\/ assign the initial value via the initializers\r\n public int X { get; } = 8;\r\n public int Y { get; }\r\n}\r\n<\/pre>\n\r\nusing static System.Math;\r\n\r\n\/\/ Now instead of Math.Sqrt we can use\r\nSqrt(10);\r\n<\/pre>\n
\r\nvar s = String.Format("({0}, {1})", X, Y);\r\n<\/pre>\n\r\nvar s = $"({X}, {Y})";\r\n<\/pre>\n\r\npublic override string ToString()\r\n{\r\n return String.Format("({0}, {1})", X, Y);\r\n}\r\n<\/pre>\n\r\npublic override string ToString() => String.Format("({0}, {1})", X, Y);\r\n\r\n\/\/ or using the previously defined string interpolation\r\npublic override string ToString() => $"({X}, {Y})";\r\n<\/pre>\n\r\npublic void DoSomething(string someArgument)\r\n{\r\n if(someArgument == null)\r\n throw new ArgumentNullException(nameof(someArgument));\r\n\r\n \/\/ do something useful\r\n}\r\n<\/pre>\n