C++ For C# Developers: Part 3 – Variables and Initialization

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Today we continue the series by introducing variables and how they’re initialized. This is another basic topic with surprising complexity for C# developers.

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C++ For C# Developers: Part 2 – Primitive Types and Literals

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The series continues today with our first actual C++ code! Today we’ll start with the absolute fundamentals—primitive types and literals—on which we’ll build through the rest of the series. As basic as this topic sounds, some of it can be pretty shocking when coming from a language like C#.

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C++ For C# Developers: Part 1 – Introduction

Outside of Unity, C# is rarely used as a game programming language. C++ is used heavily in Unreal, Cryengine, Lumberyard, and almost all proprietary game studio engines. This series is for Unity game programmers who know C# and want to broaden their skills so they can effectively write code for other engines, or even write C++ scripts for Unity. Today we’ll begin with an introduction to C++’s history, standard library, tools, community, and documentation. Read on to get started!

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LINQ-Style Generic Algorithms for Burst

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We’ve seen how to create powerful, Burst-compatible generic algorithms already, but today we’ll take another approach to generic algorithms and implement them in the style of C#’s LINQ. Along the way, we’ll tackle a new challenge by implementing a generic algorithm that allocates a new collection.

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Thread Synchronization Performance

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Multi-threading is essential to performance on all modern processors. Using multiple threads brings along with it the challenge of synchronizing data access across those threads. Unity’s job system can do some of this for us, but it certainly doesn’t handle every case. For times when it doesn’t, C# provides us with a bunch of synchronization options. Which are fastest? Today we’ll find out!

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Type-Agnostic Generic Algorithms

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We looked at some generic algorithm examples in the previous article, but they weren’t very generic in one respect: they all required a NativeArray<T>. What if we wanted to make them more generic so they could work on any type of collection? Today’s article shows two ways to do just that!

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Generic Algorithm Examples

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There are many common algorithms that we use constantly: searching, filtering, mapping, and so forth. Today we’ll write a few in the Burst-friendly way as examples of how to write Burst-friendly code that’s still reusable and efficient.

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How SharedStatic Works

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Burst 1.2 comes with a new feature: SharedStatic<T>. This allows us to write to static variables from within Burst-compiled code like jobs and function pointers. Today we’ll look at how this is implemented by Burst and IL2CPP. We’ll also put them to a performance test to see how fast they are.

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Function Types: A Spectrum

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C# gives us lots of types of functions for us to call. We must constantly decide between them. Should this function be static? Should it be virtual? There are many factors that go into making the decision. Today we’ll look at the function types as a spectrum and hopefully get a little perspective on our options.

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Burst Function Pointers vs. Jobs

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Function pointers aren’t the only way to express a unit of work. Unity’s own job system does just this, albeit in a different way. Today we’ll compare the performance of Burst’s function pointers against jobs themselves!

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