I have an enum like the following: enum E<'a> { #[cfg(feature = "baz")] Foo(&'a str), Bar, } impl E<'_> { /* stuff */ } There is a problem: with feature baz ...

I have a C# library that I want to publish on Nuget. Currently it only builds if I target net8.0-windows because it has <UseWindowsForms>true</UseWindowsForms>. However, it uses Windows ...

By default, clang defines some SIMD related macros: ~ $ 0 clang++ -dM -E -x c /dev/null | grep -i sse #define __SSE2_MATH__ 1 #define __SSE2__ 1 #define __SSE_MATH__ 1 #define __SSE__ 1 These can be ...

I'm looking for an elegant way to organize global compilation flags for a Visual Studio solution with multiple projects. I've gotten familiar with the existing configuration manager provided by Visual ...

I am writing a Rust crate where I have a struct whose field implements a trait, and I'd like to provide a feature where: #[cfg(not(feature = "dyn"))]: struct field is T, statically ...

I'm using Microsoft Visual Studio 2022 Community edition. I want to create two executables from the same project using conditional attributes. Example: using System; public class MyClass { ...

I have a problem with conditional compiling in EF Core on .NET 8 as described later. It seems as if EF Core code generates SQL that does not take project defines in account. I know how to make a brute ...

A function which is only being used with debug assertions is deactivated by: #[cfg(debug_assertions)] fn some_debug_support_fn() {} But this makes cargo bench fail to compile, as it is missing the ...

The Problem I extensively use C# preprocessor directives to maintain different code variants during development. For example: #if fix_issue_001 // new implementation #else // original ...

I would like to use some code only in Debug mode for assertion purposes. I have something like this at the moment: #[cfg(debug_assertions)] let mut thing_initialized = false; for ... { if cfg!(...

I am looking to serialize a nested class on condition that value of an attribute is different than some custom value. I was looking at: https://devblogs.microsoft.com/dotnet/system-text-json-in-dotnet-...

I have a class Base and MyFunc templates with parameter packs. I have a class Derived, which specifies a const T& type in the parameter pack. template <typename... T> class Base {}; ...

I'm writing a Windows library with FFI to C code, and I'm using the link attribute: #[link(name = "foo")] The above works perfectly. Now, I want to provide a cargo feature which, when ...

I have a class that varies according to a compilation flag. I would like to instantiate both the versions of the class in the same scope. my_class.h #ifndef MY_CLASS_H #define MY_CLASS_H #ifdef ...

I need some lines of code to only be compiled in Development Environment. They assist in development, and there is quite a few, so manually removing them is not an option. If have looked into ...