hello_exercism

develop the crate

Step 1: create the default crate

```bash mkdir lib-hello && cd lib-hello

this is Crate Root Path

cargo init --name hello_exercism --lib ```

Step 2: develop the crate source and test codes

• Go to Crate Root Path bash vi Cargo.toml vi src/lib.rs mkdir tests touch tests/hello.rs vi tests/hello.rs cargo test

  Step 3: develop the example codes

• Go to Crate Root Path bash mkdir examples touch examples/hello.rs vi examples/hello.rs cargo run --example hello

use the crate 'hello_exercism'

Step 1: configure the file Cargo.toml

• Go to Bin Root Path bash echo 'hello_exercism = "0.1.3"' >> Cargo.toml

  Step 2: edit the rust file main.rs

• Go to Bin Root Path ```rust // vi src/main.rs use hello_exercism;

fn main () { println!("{}",helloexercism::hello()); asserteq!("Hello, World!", hello_exercism::hello()); } ```

Step 3: run the Bin program

• Go to Bin Root Path bash cargo run main