Cfg not rust
WebErgonomic bindings to SQLite for Rust. Contribute to rusqlite/rusqlite development by creating an account on GitHub. WebApr 23, 2024 · I recently started using rust and am working on a library. The following works, but seems like code duplication #[cfg(feature = "serde_support")] use …
Cfg not rust
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Webcfg-if. Documentation. A macro to ergonomically define an item depending on a large number of # [cfg] parameters. Structured like an if-else chain, the first matching branch is the item that gets emitted. [ dependencies ] cfg-if = "1.0". WebIf you want to know which cfg targets are available for another platform, such as 64-bit Windows, run rustc --print=cfg --target=x86_64-pc-windows-msvc. Unlike in your Rust source code, you cannot use [target.'cfg (feature = "fancy-feature")'.dependencies] to add dependencies based on optional features. Use the [features] section instead:
WebFeb 22, 2024 · Rust Server Settings. In order to change the details for your Rust server such as name and description, you will need a config file named server.cfg, you can create this if it does not already exist, which after editing you will upload to the "server/experimental/cfg" folder inside your servers FTP directory.. For instructions on … WebThe cfg and cfg_attr attributes are active. The test attribute is inert when compiling for tests and active otherwise. Attribute macros are active. All other attributes are inert. Tool …
WebAs described in The Rust Programming Language, specifically the chapter on conditional compilation: You can also set another attribute based on a cfg variable with cfg_attr: # … WebYou can use # [cfg (..)] s to enable threaded and non-threaded code paths depending on if the target is WebAssembly or not: #! [cfg (target_arch = "wasm32")] fn do_work () { // Do work with only this thread... } #! [cfg (not (target_arch = "wasm32"))] fn do_work () { use std::thread; // Spread work to helper threads.... thread::spawn ( { // ...
WebConfiguration options are either provided by the compiler or passed in on the command line using --cfg (e.g. rustc main.rs --cfg foo --cfg 'bar="baz"' ). Rust code then checks for their presence using the # [cfg (...)] attribute:
WebMar 28, 2024 · You could create a private module that import all the files, and then let the parent module re-export everything from that private module: # [cfg (feature = "eugene")] … cost of aa vehicle inspectionWebJun 17, 2024 · This is the code basically: fn some_function () -> SomeType { # [cfg (feature = "some_feature")] let some_variable = SomeType::new (); some_variable } ExpHP June … cost of a babysitterWebSep 22, 2024 · To follow along, all you need is a recent Rust installation (1.39+) and a tool to send HTTP requests, such as cURL. First, create a new Rust project: cargo new rust-config-example cd rust-config-example Next, edit the Cargo.toml file and add the dependencies you’ll need. cost of a bachelor\u0027s degree in canadaWebMay 24, 2024 · edited. Start a lib with no_std enabled and write unit tests of some smaller pieces. Also make an integration test in the form of an example demo. Debugging these tests would be pretty easy if I could just throw in some println! () s. Change #! [no_std] to #! [cfg_attr (not (test), no_std)]. This lets me set things as no_std for regular builds ... breakfast treats recipesWebApr 23, 2015 · There really should be a #[cfg(debug)] currently you can define something like #[cfg(feature= "debug")] but you than have to manually add --features debug to your cargo build. On the other hand, I can see why you would want an explicit call. edit: hihi, I misjudged the age of this thread, reading "Apr'15" I though this was only 3 days old cost of a background checkWebOct 28, 2024 · Like C/C++ and other native languages, Rust includes support for conditional compilation.The most common way to instruct the compiler whether to include or ignore a piece of code in compilation is to add a cfg attribute with the required condition. For example, you can use this mechanism to check the target architecture and switch code … cost of a back braceWebOct 20, 2024 · I don't find the macro really useful but i'm new to rust so you're explanation would be really nice ! For the sake of having DRY code, having to write twice the target of the #[cfg(...)] (+ #[cfg(not(...))]) is suboptimal, hence a macro that let's you write else instead.. If you are new to Rust this is clearly not the most important, so you can skip … cost of a backhoe