EITHER the number of parameters OR the return type of each method overload

The names of the method overloads

EITHER the number of parameters OR the type of at least one parameter

EITHER the number of parameters OR the type of at least one parameter OR the return type of each method overload

EITHER the names of the method overloads OR their return types

=

=+

+=

=>

->

var x = new int[]{1, 2, 3};

int[] x = int[] {1, 2, 3};

int[3] x = new int{1, 2, 3};

var x = new {1, 2, 3};

Passing by reference protects the data in the caller from inadvertant changes to the parameter value inside the called method.

If the method throws an exception, passing by reference preserves more information in the stack trace.

If the parameter is large, passing by reference saves data copying and can therefore be quicker.

Passing by reference allows the method to safely execute on multiple threads simultaneously without risk of corrupting the data in the parameter.

System.Int64

System.Long64

System.Int

System.Int32

System.Long

Guides the compiler in which overload of a method to choose

Allows arguments of any type to be passed to a method

Allows individual arguments to be omitted, with default values supplied, when calling the method

Allows a variable number of arguments to be used when a method is called

Succeed

Compile error

Warning

Standard transportation
Standard transportation
Standard transportation

Standard transportation
A roof that opens up.
Carries seven people.

Standard transportation
Standard transportation
Carries seven people.

Any struct or class that is not marked as sealed

Any class that is not marked as sealed

Any class

Any type except for the C# built-in types (int, bool, string, etc.)

public static int WordCount (string str) : this str
{ /* ... */ }

public static extension int WordCount (string, string str)
{ /* ... */ }

public extension int string.WordCount(this string str)
{ /* ... */ }

public static int WordCount (this string str)
{ /* ... */ }

Protected internal

Protected

Internal

Public

Private