Cargo Watch: To Recompile Rust Project Automatically

cargo-watch is a tool that allows to automatically recompile Rust project whenever there is a change in the Rust source code.

How to install cargo-watch

cargo install cargo-watch

Logs:

 Updating crates.io index
  Downloaded cargo-watch v8.4.0
  Downloaded 1 crate (171.1 KB) in 0.74s
  Installing cargo-watch v8.4.0
....
  Compiling cargo-watch v8.4.0
    Finished release [optimized] target(s) in 51.38s
  Installing /Users/c2ctech/.cargo/bin/cargo-watch
   Installed package `cargo-watch v8.4.0` (executable `cargo-watch`)

Cargo Watch Usage Examples

Syntax:

cargo watch [-x command]...




1. To Watch Tests

cargo watch -x test 




2. To Watch and Run a Binary

cargo watch -x run 




3. To Watch Builds

cargo watch -x build 




4. To Watch and Build with Release Optimization

cargo watch -x "build --release" 




5. To Watch and Run Custom Commands

cargo watch -x "run -- arg1 arg2" 




6. To Watch Specific Package

cargo watch -p package-name build 




7. To Watch Run Test for Specific Package

cargo watch -p package-name test




8. To Watch an arbitrary command

cargo watch -- echo Hello world

Comments & Discussion

Facing issues? Have questions? Post them here! We're happy to help!

Load Comments

Provide Feedback For This Article

We take your feedback seriously and use it to improve our content. Thank you for helping us serve you better!

Helpful Not Helpful

Thanks for your feedback! If you have time, please provide details by selecting options below.

Submit Feedback

😊 Thanks for your time, your feedback has been registered!