Posts Tagged struct

P/Invoke in Burst: No Safety Net

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Calling into native code like C++ from C# is a powerful interoperability tool in Unity. As we move more and more code out of Mono and IL2CPP and into Burst, will we still have this tool available? Today we’ll find out!

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Tuples in Burst

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Tuples are a new feature in C# 7 and they’re backed by the ValueTuple struct, not class. Hopefully they’ll be supported by Burst, so let’s try them out!

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Adding Unions to Burst

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We’ve seen how to add unions to C#, but does this work with the new Burst compiler? Today we’ll put it to the test and see if it can handle some of the more advanced struct customization features in C#!

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Awkward Objects

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We create objects out of structs and classes all the time, but oftentimes these evolve to the point where using them is really awkward. Today we’ll learn to recognize the telltale signs of an overextended object design and how to easily fix it.

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Fast Structs

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Structs are great for controlling memory layout and avoiding the GC, but we can go a lot further to get even more speed out of them. Today we’ll look at a simple tweak that can dramatically speed up the code using the structs without even changing it!

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BitArray32 and BitArray64

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C# already has two bit array types, but both are lacking. BitArray is a class so it requires heap allocation and GC. BitVector32 is a struct, but it’s usage is bizzare, it’s implemented inefficiently, it’s not enumerable, and there’s no 64-bit version. Today we’ll create a new, simple type to remedy these issues and add a new tool to our toolbox!

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IL2CPP Output for C# 7.3: Everything Else

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Today we conclude the series by looking at all the remaining features in C# 7.3 that we get access to in Unity 2018.3. Read on to learn about new kinds of structs, in parameters, new where constraints, discards, default literals, generalized async returns, and new preprocessor symbols!

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IL2CPP Output for C# 7.3: Tuples

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Unity 2018.3 officially launched last Thursday and with it comes support for the very latest version of C#: 7.3. This includes four new versions—7.0, 7.1, 7.2, and 7.3—so it’s a big upgrade from the C# 6 that we’ve had since 2018.1. Today we’ll begin an article series to learn what happens when we use some of the new features with IL2CPP. We’ll look at the C++ it outputs and even what the C++ compiles to so we know what the CPU will end up executing. Specifically, we’ll focus on the new tuples feature and talk about creating, naming, deconstructing, and comparing them.

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DIY Iterators and Coroutines

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Iterators aren’t magic. We’ve seen the IL2CPP output for them and it’s not complex. It turns out we can just as easily implement our own iterators and gain some nice advantages along the way. Read on to learn how!

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The Maybe Monad

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Monads sound fancy, but sometimes they’re actually really simple and useful. Today we’ll look at the Maybe monad, which is a low-overhead tool that’s extremely useful to prevent bugs.

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