Swift - Types of Integers

  1. HOME
  2. Swift
  3. Data Type
  4. Integers

Introduction

If you want to explicitly control the size of the variable used, you can specify one of the various integer types available:

  • Int8 and UInt8
  • Int16 and UInt16
  • Int32 and UInt32
  • Int64 and UInt64

On 32-bit systems, Int is the same as Int32 , while on 64-bit systems, Int is the same as Int64 .

On 32-bit systems, UInt is the same as UInt32 , while on 64-bit systems, UInt is the same as UInt64 .

The following code snippet prints the range of numbers representable for each integer type:

Demo

print("UInt8  - Min: \(UInt8.min) Max: \(UInt8.max)")
print("UInt16 - Min: \(UInt16.min) Max: \(UInt16.max)")
print("UInt32 - Min: \(UInt32.min) Max: \(UInt32.max)")
print("UInt64 - Min: \(UInt64.min) Max: \(UInt64.max)")
print("Int8  - Min: \(Int8.min) Max: \(Int8.max)")
print("Int16 - Min: \(Int16.min) Max: \(Int16.max)")
print("Int32 - Min: \(Int32.min) Max: \(Int32.max)")
print("Int64 - Min: \(Int64.min) Max: \(Int64.max)")

Result

For integer type, the min property returns the minimum number and the max property returns the maximum number.

Related Topic