# Unary + — numeric identity

[Syntax and values](README.md)

## Behavior and details

A **unary** operator works with one value. Unary `+` checks that its value is a Number and leaves it unchanged. For example, `+5` is still five. It does not convert text such as `"5"` into a number.

The plus sign is a separate piece of source syntax, called a **token**. It is not part of the number literal itself. Unary signs group more tightly than multiplication. Use call parentheses when the first argument starts with `+`, such as `say(+5)`.

## Example

```pliro
# language: en
say(+3)
say(+3 * 2)
```

## Related entries

[Syntax and values](README.md) · [Built-ins](../builtins/README.md) · [Programming guides](../guides/README.md)