rust

Trying out rust sample programs.

Key points

• strongly typed, can't assign from one type to another
• statically typed, checks type at compile-time
• variables are immutable by default, have to explicitly use mut keyword to make them mutable
• all memory accesses are checked
• strict ownership management
• array-bounds are checked
• code organized as
  • functions : similar to c++ functions
  • modules : similar to namespaces/files in c++, math can be a module
  • crates : similar to an executable/library/plugin/extension, json would be a crate

Cargo

Cargo is the package manager for Rust.

• cargo build for building Cargo.toml which is the build config file
• cargo check for running tests
• cargo run for running project executable
• cargo new name --bin can be used for initializing a new binary crate or --lib for a new library crate
• cargo creates a target folder for temp and target files