Tooling crash course

Task	Kotlin/Gradle	Rust/Cargo
New project	IDE / `gradle init`	`cargo new my_app`
Build	`./gradlew build`	`cargo build` (`--release` for optimized)
Run	`./gradlew run`	`cargo run`
Test	`./gradlew test`	`cargo test`
Add dependency	edit `build.gradle`	`cargo add serde` (edits `Cargo.toml`)
Format	ktlint / spotless	`cargo fmt` (rustfmt — one canonical style)
Lint	detekt	`cargo clippy` — genuinely excellent, run it constantly
Docs	Dokka	`cargo doc --open`
REPL	Kotlin REPL	none official; use play.rust-lang.org

clippy is the single best learning tool — it suggests idiomatic rewrites. Install everything via rustup (the toolchain manager, like sdkman for Rust).

Write tests inline, in the same file:


#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn it_adds() { assert_eq!(add(2, 2), 4); }
}