install a package

cargo install name

update a package

cargo update name

or leave out name to update all.

create project

cargo new name

build and run

cargo run
cargo build

# or with optimizations:
cargo build --release

# or simply check that it could compile
# often faster than actually compiling:
cargo check

test

cargo test

show output

By default rust will hide the stdout from your tests. You can show it with:

cargo test -- --show-output

consecutively

Tests are normally each run in their own thread. If you would like to instead run all the tests consecutively:

cargo test -- --test-threads=1

a single test

It's actually a pattern so you can use this to match any test which contains the name "add":

cargo test add

documentation

Build and open documentation provided by local dependencies.

cargo doc --open

show result of macro and #[derive] expansion

This can be done with the cargo-expand tool: cargo install cargo-expand

cargo expand

profiles

In rust, release profiles are predefined, but customizable profiles with configurations that allow changing things like the level of optimization used in producing your binary.

By default there are release and dev profiles which set the opt-level:

[profile.dev]
opt-level = 0

[profile.release]
opt-level = 3