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Expression-Bodied Members

Expression-bodied members are a shorter way to write methods and properties when they only have one line of code. Instead of { }, you use => (fat arrow).

Expression-Bodied Lambda: 

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(int x, int y) => x + y;

Expression-Bodied Methods: When a method only returns a single value, you can skip { } and return. 

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public int Add(int x, int y) => x + y;

Expression-Bodied Properties: Shortcut for read-only properties (only get, no set) 

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public int MyProperty => 42;  // Always returns 42

Expression-Bodied Indexers: Used when a class acts like an array. 

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public int this[int index] => index * 2;

Expression-Bodied Constructors: Short way to set a value in a constructor 

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public MyClass(string name) => Name = name;

Same as: 

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public MyClass(string name) 
{
    Name = name;
}