auto Type Declarations

auto Type Declarations: Motivation

Much ado about nothing … vector<MyType>::iterator iter = v.begin(); Compiler knows anyway … auto iter = v.begin();

Type Deduction Compiler knows anyway He always knew ⟶ lookup of template specializations ⟶ Same rules apply

auto Type Declarations: Details

Simplest Type Deduction auto i = 10; // int cbegin() ⟶ const_iterator auto iter = v.cbegin();

const and References const auto& cref = value; Arrays are Pointers int data[42]; // int *no_copy ... auto no_copy = data;