Today we’ll cover a couple of more minor features that don’t have C# equivalents: fold expressions and elaborated type specifiers. Though they are small, they can be quite useful!
Today we’ll explore some of the lower-level concepts in C++. These are tools that get brought out of the toolchest when performance really matters and interoperability is paramount. Read on to learn about C++’s escape hatches and take fine-grained control over memory!
There is language-level support in C# for per-thread storage of variables. The same goes for the
volatile keyword. C++ also supports per-thread variables, but with per-thread initialization and de-initialization. It has a
volatile keyword too, but it’s meaning is quite different from C#. Read on to learn how to properly use these features in each language.
Both languages have both deconstructing (
var (x, y) = vec;) and attributes (
[MyAttribute]). C++ differs from C# in several ways, so today we’ll take a look at those differences and learn how to make use of these language features.
C# has support for type aliases in the form of
using ScoreMap = System.Collections.Generic.Dictionary<string, int>; directives. This allows us to use
ScoreMap instead of the verbose
System.Collections.Generic.Dictionary<string, int> or even
Dictionary<string, int>. C++ also has type aliases, but they go way beyond what C# supports. Today we’ll dig into everything C++ offers us to make our code more concise and readable.
where constraints enable our generics to do a lot more. C++ also has constraints and they enable us to write more expressive and efficient code. Today we’ll see how to add some constraints to our templates to achieve these goals.
All of the templates we’ve written so far had a fixed number of parameters, but C++ lets us take a variable number of parameters too. This is like
params in C# functions, but for parameters to C++ templates. Today we’ll dig into this feature, which has no C# equivalent, and learn how to write and use templates with any number of parameters.
Template deduction in C++ is like generic type parameter deduction in C#: it allows us to omit template arguments. Template specialization has no C# equivalent, but enables special-casing of templates based on certain arguments. Today we’ll look at how these features can make our code a lot less noisy and also a lot more efficient.
Last time, we started looking at a core feature of C++: templates. We compared and contrasted them to C# generics and saw how they’re applied to classes, functions, lambdas, and even variables. Today we’ll leverage the power of so-called “non-type template parameters” and “template template parameters” to write some really interesting code.
C# generics (
List<T>) look a lot like C++ templates (
list<T>), but they’re different in many key ways. It’s a big subject, so today we’ll start by looking at some of the most common uses of templates: applying them to classes, functions, members, lambdas, and variables.