(C++) list initialization

 

List initialization is a type of initialization.

 

List initialization is the first of the four initialization styles [1], prefer this way of initialization for named types [2].

 

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T a { b }; //Preferred [2] T a = { b }; T a = b; T a(b);

 

Prefer the = syntax for the initialization in declarations using auto [3]

 

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auto a { b }; auto a = { b }; auto a = b; //Preferred [3] auto a(b);

 

 

 

 

 

References

 

1. Bjarne Stroustrup. The C++ Programming Language (4th edition). 2013. ISBN: 978-0-321-56384-2. Chapter 6.3.5. Initialization, page 159
2. Bjarne Stroustrup. The C++ Programming Language (4th edition). 2013. ISBN: 978-0-321-56384-2. Chapter 6.6. Advice, page 169: '[19] Prefer the {}-initializer syntax for declarations with a named type'
3. Bjarne Stroustrup. The C++ Programming Language (4th edition). 2013. ISBN: 978-0-321-56384-2. Chapter 6.6. Advice, page 169: '[20] Prefer the = syntax for the initialization in declarations using auto'