# Millisecond crate
A better way to format and display duration, which converts `33023448000ms` to `1y 17d 5h 10m 48s` or relatively
timestamp of`about a year ago`.
## Install
In your Rust project's root directory run:
```shell
$ cargo add millisecond
```
## Example
```rust
// Activate and bring the crate into scope
use millisecond::prelude::*;
fn main() {
// Obtain a duration instance
let dur = core::time::Duration::from_millis(33_023_448_000);
println!("{}", dur.pretty());
// displays: 1y 17d 5h 10m 48s
println!("{}", dur.pretty_with(MillisecondOption::long()));
// displays: 1 year 17 days 5 hours 10 minutes 48 seconds
println!("{}", dur.relative());
// displays: about a year ago
// the previous solution still works
let ms = Millisecond::from_millis(33_023_448_000);
println!("{}", ms.pretty());
// displays: 1y 17d 5h 10m 48s
}
```
## Options
Customize the parser and the output format using the `MillisecondOption` struct.
| `long` | uses full and descriptive labels for time units, such as `years` instead of abbreviated forms like `y`. | `2y` -> `2 years` |
| `dominant_only` | displays the most dominant part only (the most left part). | `1y 2d` -> `1y` |
| `days_instead_of_years` | displays time durations in days rather than converting them into years. | `1y 1d` -> `366d` |
| `format_sub_milliseconds` | shows and formats microseconds and nanoseconds if present.| `1s 2ms` -> `1s 2ms 3µs 4ns` |
*All options have default value unless specified*
### Options shorthand
In order to easily create a `MillisecondOption` instance, you can use the `MillisecondOption::default()` method:
```
let option = MillisecondOption {
days_instead_of_years: true,
..MillisecondOption::default ()
};
```
## Day of Week
Calculating the weekday could be easy if the duration was calculated from a known epoch. The `weekday` function
is implemented to convert the duration into the proper weekday value (enum).
```rust
use millisecond::prelude::*;
use std::time::{SystemTime, UNIX_EPOCH};
fn main() {
let dur = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
println!("today: {}", dur.weekday());
}
```
___
### License
MIT
##### Inspiration
This crate is inspired by `pretty-ms` npm package.