C++ constructor initializer lists

Syntax

class User {
public:
  User(std::string name) : name_(std::move(name)) {}
private:
  std::string name_;
};

Examples

class User {
public:
  User(std::string name) : name_(std::move(name)) {}
private:
  std::string name_;
};

Best practices

• Start with the smallest working example, then adapt it to your project.
• Use the language’s standard library and idioms before introducing extra dependencies.

At a glance

Purpose

Systems and general-purpose software

File extension

.cpp · .hpp

Runs in

Compiled native applications

Usually used with

Compiler and standard library

Specifications & further reading

• ISO C++ resources

Related C++ documentation