Move Semantics are a game changer on how we return values and pass arguments in C++11. In this post we concern ourselves with the best way to implement an assignment (‘=‘) operator. If rvalues and move semantics are all new for you, you might want to read Michael’s post I like to std::move it first.
Continue reading “Assignment operators in C++11”
In May the FORs leave you alone we replaced manual loops with calls to algorithms. For this we did not use the algorithms provided by the standard library but used boost.Range instead. In this post I’ll give you the rationale for that decision and introduce the transformed adaptor into the linear regression example.
Continue reading “Adaptors”
In his post may the FORs be with you, Michael mentioned that it’s best to avoid handwritten loops at all. This is not self explanatory for a lot of people, and while many arguments can be put forth to support the use of algorithms, in this post let’s stick with one: readabilty.
Continue reading “May the FORs leave you alone”
Everyone who has read Scott Meyer’s books knows: it is a good idea to make your code easy to use correctly and difficult to use incorrectly. In this light, we may be able to improve on the ifs we routinely use to check our functions’ preconditions.
The basic idea is to remove all the ifs that check for error conditions at the beginning of your function’s body by providing type parameters that already give sufficiently strong guarantees.
Continue reading “Expressing preconditions with invariants of parameter types”