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Author Archives: Glennan Carnie
Traits classes
Introduction
In this final article we’ll have a look at the issue of communicating template type information between different template instantiations, and have a look at the Traits mechanism as a method of solving these
Posted in C/C++ Programming
Tagged Algorithms, C++, C++11, containers, explicit specialisation, partial specialisation, Templates, traits
3 Comments
Template specialisation
Introduction
Welcome back to the wonderful world of templates.
So far, we have looked at what are known as base templates. In this article we’re going to look at one of the more confusing aspects of templates – specialisation. The choice of the word specialisation is unfortunate, as many confuse it with inheritance and sub-typing; in this case specialised means “more
Posted in C/C++ Programming
Tagged C++, explicit specialisation, libraries, partial specialisation, Specialisation, Templates
6 Comments
Templates of templates
Introduction
In this brief article we’ll have a look at the topic of building template classes whose parameters are themselves templates.
I’m assuming you’re reasonably familiar with template classes. If not, here’s a quick
Posted in C/C++ Programming
Tagged C++, composition, containers, Templates, templates of templates
10 Comments
Variadic templates
Introduction
In this article we’re going to look at a new feature of templates in C++11 – the concept of the variadic template.
Variadic templates allow us to create functions and classes, not only with generic types, but also a variable number of generic
Posted in C/C++ Programming
Tagged C++, constructor, inheritance, libraries, Overloading, Templates, variadic templates
1 Comment
Template member functions
Introduction
Previously we’ve looked at template functions and we’ve looked at template classes. This time, let’s look at what happens when you combine
Posted in C/C++ Programming
Tagged C++, C++11, constructor, forwarding, functions, inheritance, member functions, Overloading, r-value, r-value references, Templates
1 Comment
Templates and polymorphism
Introduction
Template functions and classes tend to cause consternation amongst programmers. The conversation tends to go something like this:
I understand the syntax of templates (although it’s ugly)
I get the idea of replacing function-like macros with template functions
I can see the application of template classes for containers
Most containers and generic functions are library code
I don’t write libraries
What’s the point of me using templates?
In this article we’re going to look at an application of templates beyond writing library code – replacing run-time polymorphism […]
Template inheritance
Introduction
Previously we looked at template class syntax and semantics. In this article we’ll extend this to look at inheritance of template
Posted in C/C++ Programming
Tagged Class, inheritance, Overloading, Overriding, Specialisation, Templates
9 Comments
Template classes
Introduction
Last time we looked at template functions, which introduced the concept of generic programming in C++.
This time let’s extend the idea of generic programming to
An introduction to C++ templates
Introduction
Templates are a very powerful – but often very confusing – mechanism within C++. However, approached in stages, templates can be readily understood (despite their heinous syntax).
The aim of this series of articles is to guide beginners through the syntax and semantics of the foundation concepts in C++ template
Posted in C/C++ Programming
Tagged expressions, functions, generic, macro, Overloading, Templates
9 Comments
Demystifying C++ lambdas
A new (but not so welcome?) addition
Lambdas are one of the new features added to C++ and seem to cause considerable consternation amongst many programmers. In this article we’ll have a look at the syntax and underlying implementation of lambdas to try and put them into some sort of
Posted in C/C++ Programming
Tagged C++0x, C++98, functors, lambda, Standard Library, std::function, STL
39 Comments