# `HttpStatus`

An HTTP response's status code, from 100 to 599.

Use it for what a response carried, such as in a log. In a route, return your failures, and let Jadpo pick the status.

## Shape

One whole number from 100 to 599.

## Example

```jadpo
HttpStatus(404)
```

`HttpStatus(number)` checks the number, and one outside its limits breaks `min` or `max`.

`text.parse(raw, as: HttpStatus)` reads one from text that comes from outside. Text that isn't one at all fails `malformed`, such as `99`, `600` or `0200`.

## Good to know

- `==` tells you whether two are the same, and `<` and `list.sort_by` compare and sort them.

## In JSON

A number, in a request, a response or `json.write`:

```json
200
404
599
```

## Details

<details>
<summary>Text form, storage, how it is shown, and operations</summary>

`HttpStatus` is in the group Web and network, and has been in Jadpo since 0.1.0.

### Text form

`text.from` writes one standard text form, the same form `text.parse` reads back: `200`, `404` and `599`.

### How it is stored

It is stored in one column named for the field, of type `integer`. `404` is stored as `404`.

### How it is shown to people

`text.format(value, locale:)` shows it to people in their locale.

With `locale: Locale.en_gb`:

| Value | Shown |
|---|---|
| `200` | `200` |
| `404` | `404` |
| `599` | `599` |

### Operations

It also takes `text.parse`, `text.from`, `text.format`, `json.read`, `json.write` and `==`. [How every standard type behaves](/docs/every-standard-type-meets-one-contract.md) says how they work.

</details>