rust_book/chapter_14_cargo_and_crates/README.md

14. More About Cargo and Crates.io

Customizing Builds with Release Profiles

=> Release profiles are predefined and customizable profiles with different configurations that allow a programmer to have more control over various options for compiling code.

Cargo has 2 main profiles:

• dev: for development (used by default with cargo build)
• release: for release (used with cargo build --release)

We can customize the release profile by adding a section to the Cargo.toml file:

[profile.dev]
opt-level = 0

[profile.release]
opt-level = 3

Publishing a Crate to Crates.io

Packages can be published to crates.io, the Rust community’s package registry.