Rust Programming Playground

cargo new hello && cd hello
cargo run

cargo +nightly run          # run with nightly
cargo +beta build           # build with beta
rustup show                 # list installed toolchains

cargo watch -x run          # rerun on save
cargo watch -x test         # retest on save
cargo watch -x "run -- --flag"

cargo fmt                   # format all files
cargo fmt -- --check        # check without modifying
cargo clippy                # lint with suggestions
cargo clippy -- -D warnings # treat warnings as errors

cargo build                 # debug build
cargo build --release       # optimized build

# Static binary (musl)
cargo build --release --target x86_64-unknown-linux-musl

cargo test                  # run all tests
cargo test test_name        # run specific test
cargo test -- --nocapture   # show println! output

rustup show                 # installed toolchains
rustup toolchain list       # all toolchains
rustc --version             # active rustc version
cargo --version             # active cargo version
rustup update               # update all toolchains