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yaml --- r: 225582 b: refs/heads/stable c: 72b03e5 h: refs/heads/master v: v3
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[refs]

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refs/tags/1.0.0-alpha.2: 4c705f6bc559886632d3871b04f58aab093bfa2f
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refs/tags/homu-tmp: 1fe32ca12c51afcd761d9962f51a74ff0d07a591
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refs/tags/1.0.0-beta: 8cbb92b53468ee2b0c2d3eeb8567005953d40828
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refs/heads/stable: 1826672c061da70c8ba73dd60d72ab94389a4b58
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refs/heads/stable: 72b03e533711c95b9c735caea73c754bfcbad4b3
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refs/tags/1.0.0: 55bd4f8ff2b323f317ae89e254ce87162d52a375
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refs/tags/1.1.0: bc3c16f09287e5545c1d3f76b7abd54f2eca868b

branches/stable/src/doc/trpl/hello-cargo.md

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```
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Note that since we're creating an executable, we used `main.rs`. If we
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want to make a library instead, we should use `lib.rs`.
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want to make a library instead, we should use `lib.rs`. This convention is required
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for Cargo to successfully compile our projects, but it can be overridden if we wish.
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Custom file locations for the entry point can be specified
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with a [`[[lib]]` or `[[bin]]`][crates-custom] key in the TOML file described below.
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authors = [ "Your name <[email protected]>" ]
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```
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This file is in the [TOML][toml] format. Let’s let it explain itself to you:
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This file is in the [TOML][toml] format. TOML is similar to INI, but has some
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extra goodies. According to the TOML docs,
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> TOML aims to be a minimal configuration file format that's easy to read due
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> to obvious semantics. TOML is designed to map unambiguously to a hash table.
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> TOML should be easy to parse into data structures in a wide variety of
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> languages.
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TOML is very similar to INI, but with some extra goodies.
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[toml]: https://github.com/toml-lang/toml
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Once you have this file in place, we should be ready to build! Try this:
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Once you have this file in place, we should be ready to build! To do so, run:
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```bash
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$ cargo build
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Hello, world!
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```
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Bam! We build our project with `cargo build`, and run it with
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Bam! We built our project with `cargo build`, and ran it with
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`./target/debug/hello_world`. We can do both in one step with `cargo run`:
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```bash
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```
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This hasn’t bought us a whole lot over our simple use of `rustc`, but think
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about the future: when our project gets more complex, we would need to do more
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about the future: when our project gets more complex, we need to do more
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things to get all of the parts to properly compile. With Cargo, as our project
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grows, we can just `cargo build`, and it’ll work the right way.
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grows, we can just run `cargo build`, and it’ll work the right way.
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When your project is finally ready for release, you can use
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`cargo build --release` to compile your project with optimizations.
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version = "0.0.1"
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```
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This file is used by Cargo to keep track of dependencies in your application.
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The `Cargo.lock` file is used by Cargo to keep track of dependencies in your application.
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Right now, we don’t have any, so it’s a bit sparse. You won't ever need
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to touch this file yourself, just let Cargo handle it.
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