C++

7.11    Alternative Notation for Function Declaration

There is another way to write the function header with auto and ->, which is at least equivalent, if not better:

auto FunctionName(ParameterType ParameterName,…)-> ReturnType

For Listing 7.2, it would look like this:

auto  func() -> int;auto  func() -> std::string;auto  func() -> void;auto  func() -> std::pair<int,std::string>;auto  func() -> vector<int>;auto  func() -> vector<int>&;auto  func() -> const vector<int>&;  

Listing 7.11     Alternative syntax for function declarations with trailing return type.

The advantage is that you can recognize the function name better when the return type becomes more complex. This can happen with templates that have multiple type arguments. For programmers who ...