hello rust

Sample

1. create a new rust project by cargo new

cargo new hello
cd hello

2. init project

git add .
git commit -m "init"

3. create repository on github

4. push this repository to github

git remote add origin git@github.com:zyyang90/hello.git
git branch -M main
git push -u origin main

5. run with cargo run

cargo run

6. add Cargo.lock to .gitignore

7. push first commit

git add .
git commit -m "first commit"
git push origin main

Summary

1. use cargo new to create a new Rust project
2. create repository on github, and push codes to github
3. use cargo run to run the project: hello
4. Cargo.lock is generate by cargo, which should add to .gitignore