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## The Rust Feature Borrowing and Ownenship
<img src="https://github.com/cnruby/learn-rust-by-crates/blob/master/docs/zh-first-volumn/src/hello-borrowing/images/hello_borrowing-06-pointers.png?raw=true"/>

## Getting Started
- Learn the crate [hello_exercism](https://crates.io/crates/hello_exercism)
- install [cargo script](https://crates.io/crates/cargo-script)
- install [bat](https://crates.io/crates/bat)
```bash
cargo install cargo-script
cargo install bat
```

## Project
- name: hello-borrowing
- crate name: borrowing_exerci
- description: how to understand the rust borrowing

## Subproject: bin-hello
- folder name: bin-hello
- description: the crate 'borrowing_exerci'

## install the crate `borrowing_exerci`
```bash
cargo install borrowing_exerci
```

## Use the crate `borrowing_exerci` help
```bash
bw -h
```

## List all commands with features for code
```bash
bw -c <code>

# example:
bw -c closure_immut_string
```

## Run the code with a feature
- run a rust file with a feature
```bash
bw -c <code> -f <feature> | bat -l rs

# example "closure_immut_string" with a feature "ok":
bw -c closure_immut_string -f ok | bat -l rs
# tip: `f`, Forward  one window
# tip: `b`, Backward  one window
# tip: `q`, Exit.

# example "closure_immut_string" with a feature "err_01":
bw -c closure_immut_string -f err_01 | bat -l rs
# tip: `f`, Forward  one window
# tip: `b`, Backward  one window
# tip: `q`, Exit.
```

### Resources