tabled

An easy to use library for pretty printing tables of Rust structs and enums.

There are more examples and you can find in this README.

Usage

To print a list of structs or enums as a table your types should implement the the Tabled trait or derive it with a #[derive(Tabled)] macro. Most of the default types implement the trait out of the box.

use tabled::{Table, Tabled};

#[derive(Tabled)]
struct Language {
    name: String,
    designed_by: String,
    invented_year: usize,
}

impl Language {
    fn new(name: &str, designed_by: &str, invented_year: usize) -> Self {
        Self {
            name: name.to_string(),
            designed_by: designed_by.to_string(),
            invented_year,
        }
    }
}

let languages = vec![
    Language::new("C", "Dennis Ritchie", 1972),
    Language::new("Go", "Rob Pike", 2009),
    Language::new("Rust", "Graydon Hoare", 2010),
    Language::new("Hare", "Drew DeVault", 2022),
];

let table = Table::new(languages).to_string();

let expected = "+------+----------------+---------------+\n\
                | name | designed_by    | invented_year |\n\
                +------+----------------+---------------+\n\
                | C    | Dennis Ritchie | 1972          |\n\
                +------+----------------+---------------+\n\
                | Go   | Rob Pike       | 2009          |\n\
                +------+----------------+---------------+\n\
                | Rust | Graydon Hoare  | 2010          |\n\
                +------+----------------+---------------+\n\
                | Hare | Drew DeVault   | 2022          |\n\
                +------+----------------+---------------+";

assert_eq!(table, expected);

The same example but we are building a table step by step.

use tabled::{builder::Builder, settings::Style};

let mut builder = Builder::new();
builder.push_record(["C", "Dennis Ritchie", "1972"]);
builder.push_record(["Go", "Rob Pike", "2009"]);
builder.push_record(["Rust", "Graydon Hoare", "2010"]);
builder.push_record(["Hare", "Drew DeVault", "2022"]);

let mut table = builder.build();
table.with(Style::ascii_rounded());

let table = table.to_string();

assert_eq!(
    table,
    concat!(
        ".------------------------------.\n",
        "| C    | Dennis Ritchie | 1972 |\n",
        "| Go   | Rob Pike       | 2009 |\n",
        "| Rust | Graydon Hoare  | 2010 |\n",
        "| Hare | Drew DeVault   | 2022 |\n",
        "'------------------------------'"
    )
);