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.

Most of a table configuration can be found in tabled::settings module.

use tabled::{Table, Tabled};
use testing_table::assert_table;

#[derive(Tabled)]
struct Language<'a> {
    name: &'a str,
    designed_by: &'a str,
    invented_year: usize,
}

let languages = vec![
    Language { name: "C",    designed_by: "Dennis Ritchie", invented_year: 1972 },
    Language { name: "Go",   designed_by: "Rob Pike",       invented_year: 2009 },
    Language { name: "Rust", designed_by: "Graydon Hoare",  invented_year: 2010 },
    Language { name: "Hare", designed_by: "Drew DeVault",   invented_year: 2022 },
];

let table = Table::new(languages);

assert_table!(
    table,
    "+------+----------------+---------------+"
    "| name | designed_by    | invented_year |"
    "+------+----------------+---------------+"
    "| C    | Dennis Ritchie | 1972          |"
    "+------+----------------+---------------+"
    "| Go   | Rob Pike       | 2009          |"
    "+------+----------------+---------------+"
    "| Rust | Graydon Hoare  | 2010          |"
    "+------+----------------+---------------+"
    "| Hare | Drew DeVault   | 2022          |"
    "+------+----------------+---------------+"
);

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

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

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());

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