# Function - Arity

### Table of Contents

## About

The number of argument in a function signature is called the arity

## Articles Related

## List

- 0-ary - Function - Nilary / Nullary - 0 argument
- 1-ary - Function - Unary - 1 argument
- 2-ary - Function - Binary Function/Operation - two arguments
- 3-ary - Ternary - three arguments. Example:

## Documentation / Reference

- More Arity