要把上一节创建的库链接到一个 crate，必须使用 extern crate 声明。这不仅会 链接库，还会用一个与库名相同的模块来存放库里面的所有 … nikomatsakis:issue-50672-remove-extern-crate-idiom Tip: don't forget to use the cty crate if your types in the generated bindings are prefixed with cty. Prefix searches with a type followed by a colon (e.g. Ex:

fn:) to restrict the search to a given type. Still a few minor issues to fix: this does now leave a blank line... (defer to #51176) idea: extend the span to be replaced by 1 character if the next character is a \n what about macros? nikomatsakis:issue-50672-remove-extern-crate-idiom [feature(test)]` flag.This is an exception as stated in Rust 2018 documentation.The way the magic extern crate stuff works is that cargo passes flags to rustc telling it what crates are around.This does not include any of the extra libraries shipped with the stdlib. Contribute to stepancheg/grpc-rust development by creating an account on GitHub. Rust By Example. As the Rust compiler does not directly know how to compile C or C++ code (or code from any other language, which presents a C interface), it is necessary to compile your non-Rust … multiple packages within the same workspace. They're all unstable to directly use.If it still worked with the automagic extern crate stuff, then your crate would suddenly have a bunch of implicit loaded crates that trigger confusing errors.That said it may be worth lifting this restriction on test crates for libtest, but with luck we'll have a much better stable testing framework when the custom test frameworks RFC gets implementedNew comments cannot be posted and votes cannot be castA place for all things related to the Rust programming language—an open-source systems language that emphasizes performance, reliability, and productivity.Press J to jump to the feed. nikomatsakis:issue-50672-remove-extern-crate-idiom This does not include any of the extra libraries shipped with the stdlib. This will not only link the library, but also import all its items under a module named the same as the library.
versions before 1.0.0. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.By clicking “Sign up for GitHub”, you agree to our Seems like a fine idea to me! Still a few minor issues to fix: this does now leave a blank line... (defer to #51176) idea: extend the span to be replaced by 1 character if the next character is a \n what about macros? Additionally, reqwest's Response struct implements Rust's Read trait, so many useful standard library and third party crates will have convenience methods that take a Response anywhere T: Read is acceptable.. rustc::metadata is where my hunt ended. If you want to know which cfg targets are available on your platform, run

nikomatsakis:issue-50672-remove-extern-crate-idiom Rust implementation of gRPC. Copy link Quote reply Member Author orium commented Aug 20, 2018. Crates are a bit similar to the packages in some other languages. Extend the unused_extern_crates lint to offer a suggestion to remove the extern crate and remove the unnecessary_extern_crate lint. This comment has been minimized. To link a crate to this new library, the extern crate declaration must be used. We'd eventually like to remove the requirement for extern crate for them as well, but it hasn't shipped yet. By using our Services or clicking I agree, you agree to our use of cookies. You can also temporarily override the location of a dependency — for example, to be able to test out a bug fix in …
These are the crates distributed with Rust itself. 23.2k 22 22 gold badges 120 120 silver badges 179 179 bronze badges. You can depend on other Cargo-based crates for use in your build scripts. Crates compile individually. Note : Additional crates that ship with rustc , such as proc_macro , alloc , and test , are not automatically included with the --extern flag when using Cargo. we intend to use the latest commit on the It is possible to specify both a registry version and a One example where this can be useful is when you have split up a library into If the crate has child file modules, those files will get merged with the crate file and compile as a single unit. A crate can produce an executable/ a binary or a library. do we need to watch out for that? Hi! Search functions by type signature (e.g. This comment has been minimized. extern crate is no longer needed - the dependency being optional or not isn't relevant. Building C/C++ code with the cc crate

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