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https://github.com/cuppar/rtd

Learn Rust by 500 lines code
https://github.com/cuppar/rtd

cli-app learning-by-doing rust step-by-step-guide tutorial

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Learn Rust by 500 lines code

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# Learn Rust by 500 lines code

[![crate_version](https://img.shields.io/crates/v/rtd-tutorial)](https://crates.io/crates/rtd-tutorial)

[![crate_downloads](https://img.shields.io/crates/d/rtd-tutorial?color=blue)](https://crates.io/crates/rtd-tutorial)

[![license](https://img.shields.io/crates/l/rtd-tutorial?color=red)](https://github.com/cuppar/rtd/blob/master/LICENSE)



English | [中文](https://github.com/cuppar/rtd/blob/master/readme_zh.md#500%E8%A1%8C%E4%BB%A3%E7%A0%81%E5%AD%A6%E4%BC%9Arust)



- RTD (Rust To Do) is a todo app cli tool write by 500 lines Rust code. (exclude space lines/comments/long line break display/test code)

- RTD is also a [tutorial](https://github.com/cuppar/rtd/wiki), designed to learn Rust by doing.



![rtd_list_all](Tutorial/doc/img/readme/rtd_list_all.png)



## Table of contents



- [What can you learn from rtd?](#what-can-you-learn-from-rtd)

- [Prepare](#prepare)

- [Install](#install)

- [Usage](#usage)

- [About author](#about-author)



---



## What can you learn from RTD?



#### Assuming you know nothing about Rust, through the [Learn Rust by 500 lines code](https://github.com/cuppar/rtd/wiki) tutorial, step by step to build the project from scratch, you will learn:

  - Rust common syntax

  - Rust module system (`package`/`binary crate`/`library crate`/`mod`/`pub`/`use`)

  - Rust ownership model (Bernstein conditions)

  - Rust lifetime

  - Rust error/null handling model (`Result`/`Option`)

  - Rust generic

  - Rust pattern matching (`if let` , `match` ...)

  - Rust unit test

  - Rust file I/O (`File Seek`/`Buffed File I/O`)

  - Rust manipulating environment variables

  - Rust command line parameter parsing

  - Rust release package to crate.io

  - The general process of developing a program (requirements/design/implementation/testing/release/maintenance)

  - Layered abstraction (data storage layer/model mapping layer/data model layer/business logic layer/application interface layer/user interface layer)

  - Handwritten serialization/deserialization from scratch

  - Implement the recycle bin function (virtualization concept)



###### Architecture



![rtd_arch](Tutorial/doc/img/readme/rtd_arch.svg)



###### Storage

Use a local file `$HOME/.rtd.csv` store all data



![data_storage](Tutorial/doc/img/readme/csv.png)

![rtd_list_all](Tutorial/doc/img/readme/rtd_list_all.png)



#### After completing this tutorial or installing RTD directly, you will get:

  - Extremely lightweight and concise todo command line application

  - Cross-platform, Rust's excellent build system naturally supports cross-platform

  - Safe, supports recycle bin, completely local, no network, no database

  - All data storage uses only one local csv file, which can be switched between different machines by copying the csv file



---



Interesting fact: I use RTD to complete the RTD tutorial :)



If you like my tutorial, don't forget to give me a star~



---



## Prepare



- Rust is naturally cross-platform. This project is built and tested in the `linux` environment, and `Windows`/`MacOS` are also supported. You can choose to download the corresponding `Cargo` according to your own operating system.

- `Cargo` Rust's package management and build tool, can be installed directly through the [Rust official website](https://www.rust-lang.org/tools/install) `rustup` one line command. Then, all things will be done by `Cargo`, so cute, right?



## Install



#### Via `crate.io` :



```bash

cargo install rtd-tutorial

```



#### Or via `git repo` :

```bash

git clone https://github.com/cuppar/rtd.git

cargo install --path rtd

```



## Usage



#### View help document

```bash

rtd -h

rtd --help

```



![rtd_help_summary](Tutorial/doc/img/readme/rtd_help_summary.png)

![rtd_help](Tutorial/doc/img/readme/rtd_help.png)



#### Add a todo

```bash

rtd -a 

rtd --add 

```



![rtd_add](Tutorial/doc/img/readme/rtd_add.png)



#### List all uncompleted todos

```bash

rtd

rtd -l

rtd -l uncompleted

rtd --list

rtd --list uncompleted

```



![rtd_list_uncompleted](Tutorial/doc/img/readme/rtd_list_uncompleted.png)



#### Complete a todo

```bash

rtd -c 

rtd --complete 

```



![rtd_complete_item](Tutorial/doc/img/readme/rtd_complete_item.png)



#### List all completed todos

```bash

rtd -l completed

rtd --list completed

```



![rtd_list_completed](Tutorial/doc/img/readme/rtd_list_completed.png)



#### Uncomplete a todo

```bash

rtd -u 

rtd --uncomplete 

```



![rtd_uncomplete_item](Tutorial/doc/img/readme/rtd_uncomplete_item.png)



#### Throw a todo into the recycle bin

```bash

rtd -d 

rtd --delete 

```



![rtd_delete_item](Tutorial/doc/img/readme/rtd_delete_item.png)



#### List all recycle bin todos

```bash

rtd -l deleted

rtd --list deleted

```



![rtd_list_deleted](Tutorial/doc/img/readme/rtd_list_deleted.png)



#### Restore a todo from the recycle bin

```bash

rtd -r 

rtd --restore 

```



![rtd_restore_item](Tutorial/doc/img/readme/rtd_restore_item.png)



#### Physically destroy a todo

```bash

rtd --destroy 

```



![rtd_destroy_item](Tutorial/doc/img/readme/rtd_destroy_item.png)



#### Empty recycle bin

```bash

rtd --destroy-deleted

```



![rtd_destroy_deleted](Tutorial/doc/img/readme/rtd_destroy_deleted.png)



#### List all todos

```bash

rtd -l all

rtd --list all

```



![rtd_list_all](Tutorial/doc/img/readme/rtd_list_all.png)



#### Clear all todos

```bash

rtd --clear

```



![rtd_clear](Tutorial/doc/img/readme/rtd_clear.png)



## About author



Cuppar He(He Zhiying), software development engineer, likes programming, technical writing, learning new things, especially computer science, worked for [SAP](https://www.sap.com/)([World Top 100](https://www.rankingthebrands.com/Brand-detail.aspx?brandID=22)) and [Alibaba Group](https://www.alibabagroup.com/)([World Top 100](https://www.rankingthebrands.com/Brand-detail.aspx?brandID=6245) & Chinese internet giant). I am currently in Gap Year, if you are looking for a software development engineer and can provide a high-quality offer(Both remote and on-site), please contact me `[email protected]`.