# unit · Rell standard library · Chromia Docs (concept)

> type unit A type with no member values, much like void in other languages. Typically used as a return type for functions where no return value is required.

Source: https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/unit/

TYPE

# unit

```signature
type unit
```

A type with no member values, much like `void` in other languages.

Typically used as a return type for functions where no return value is required. Indeed, when a function
is declared without a specified return type, the return type is implicitly `unit`. In other words, the
function definition:

Rell

```
function f(...) { ... }
```

is equivalent to:

Rell

```
function f(...): unit { ... }
```

Since 0.6.0

## Methods

[unit](https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/unit/unit/)

[View this page on docs.chromia.com](https://docs.chromia.com/pages/rell-stdlib/-rell%20-system%20-library/%5Broot%5D/unit/index.html)Generated API reference, mirrored from the live docs