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  "title" : "Default Literal Types"
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# Default Literal Types

Type aliases representing the concrete type that a literal takes when no other type
information is provided.

## Overview

This example declares the `numberOfCookies` constant, using an integer literal to
express its value:

```swift
let numberOfCookies = 5
// type(of: numberOfCookies) == Int.self
```

When a literal expression is written with no type information, Swift uses these type
aliases to determine what type to use for the expression. In this case, the `numberOfCookies`
constant has the default type for an integer literal, `Int`, as designated by the
`IntegerLiteralType` type alias.

## Topics

### Basic Values

[`BooleanLiteralType`](/documentation/Swift/BooleanLiteralType)

The default type for an otherwise-unconstrained Boolean literal.

[`IntegerLiteralType`](/documentation/Swift/IntegerLiteralType)

The default type for an otherwise-unconstrained integer literal.

[`FloatLiteralType`](/documentation/Swift/FloatLiteralType)

The default type for an otherwise-unconstrained floating-point literal.

### Strings and Text

[`StringLiteralType`](/documentation/Swift/StringLiteralType)

The default type for an otherwise-unconstrained string literal.

[`ExtendedGraphemeClusterType`](/documentation/Swift/ExtendedGraphemeClusterType)

The default type for an otherwise-unconstrained Unicode extended
grapheme cluster literal.

[`UnicodeScalarType`](/documentation/Swift/UnicodeScalarType)

The default type for an otherwise-unconstrained unicode scalar literal.


---

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