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Tag Archives: type deduction
Getting your head around auto’s type-deduction rules
Technical Consultant at Feabhas Ltd
Glennan is an embedded systems and software engineer with over 20 years experience, mostly in high-integrity systems for the defence and aerospace industry.
He specialises in C++, UML, software modelling, Systems Engineering and process development.
He specialises in C++, UML, software modelling, Systems Engineering and process development.
Latest posts by Glennan Carnie (see all)
- Practice makes perfect, part 3 – Idiomatic kata - February 27, 2020
- Practice makes perfect, part 2– foundation kata - February 13, 2020
- Practice makes perfect, part 1 – Code kata - January 30, 2020
Automatic type-deduction is perhaps one of the more divisive features of Modern C++. At its core it’s a straightforward concept: let the compiler deduce the type of an object from its initialiser. Used in the right way this can improve the readability and maintainability of your code.
However, because auto is based on template type-deduction rules there are some subtleties that can catch the unwary programmer.
In this article we’ll have a look at auto in the context of the template type-deduction […]
Posted in C/C++ Programming
Tagged auto, C++, C++0x, C++11, C++1y, l-value, l-value references, r-value, r-value references, reference collapsing, type deduction
3 Comments
Bitesize Modern C++ : auto
Technical Consultant at Feabhas Ltd
Glennan is an embedded systems and software engineer with over 20 years experience, mostly in high-integrity systems for the defence and aerospace industry.
He specialises in C++, UML, software modelling, Systems Engineering and process development.
He specialises in C++, UML, software modelling, Systems Engineering and process development.
Latest posts by Glennan Carnie (see all)
- Practice makes perfect, part 3 – Idiomatic kata - February 27, 2020
- Practice makes perfect, part 2– foundation kata - February 13, 2020
- Practice makes perfect, part 1 – Code kata - January 30, 2020
C++ is a statically-typed language, that is, you must explicitly declare the type of every object before use. The type of an object specifies
The amount of memory occupied
How the memory (bits) is interpreted
The operations allowable on the object
An object’s type is fixed at declaration – unless the programmer chooses to circumvent the type system using a cast.
Often for C++ objects specifying the type can be onerous:
C++11 allows automatic type-deduction to simplify the creation and maintenance of code.
The […]