Double

public extension Double

This set of extensions provides a variety of utility functions for common conversions in Swift. It includes functions for converting between numeric types, temperature units, distance units, and power units, as well as formatting a value as a price with a specified currency symbol. The roundTo function allows for rounding a value to a specific number of decimal places and is a mutating function, modifying the value in place.


                    
                    
                    toInt()

Converts the value to an integer.

Example:

  let doubleValue = 42.75
  let integerValue = doubleValue.toInt()
  print(integerValue) // Output: 42

Declaration

Swift

func toInt() -> Int

Return Value

An integer representation of the value.


                    
                    
                    toString()

Converts the value to its string representation.

Example:

  let number = 123
  let stringValue = number.toString()
  print(stringValue) // Output: "123"

Declaration

Swift

func toString() -> String

Return Value

A string representation of the value.


                    
                    
                    toPrice(currency:)

Converts the value to a formatted price string with the specified currency symbol.

Example:

  let priceValue = 25.99
  let formattedPrice = priceValue.toPrice(currency: "$")
  print(formattedPrice) // Output: "$25.99"

Declaration

Swift

func toPrice(currency: String) -> String

Parameters


                                currency

The currency symbol to be used in the formatted string.

Return Value

A string representation of the value as a formatted price.


                    
                    
                    celsiusToFahrenheit()

Converts the temperature from Celsius to Fahrenheit.

Example:

  let celsiusTemperature = 25.0
  let fahrenheitTemperature = celsiusTemperature.celsiusToFahrenheit()
  print(fahrenheitTemperature) // Output: 77.0

Declaration

Swift

func celsiusToFahrenheit() -> Double

Return Value

A double value representing the temperature in Fahrenheit.


                    
                    
                    fahrenheitToCelsius()

Converts the temperature from Fahrenheit to Celsius.

Example:

let fahrenheitTemperature = 77.0
let celsiusTemperature = fahrenheitTemperature.fahrenheitToCelsius()
print(celsiusTemperature) // Output: 25.0

Declaration

Swift

func fahrenheitToCelsius() -> Double

Return Value

A double value representing the temperature in Celsius.


                    
                    
                    celsiusToKelvin()

Converts the temperature from Celsius to Kelvin.

Example:

let celsiusTemperature = 77.0
let klevinTemperature = celsiusTemperature.celsiusToKelvin
print(klevinTemperature) // Output: 350.15

Declaration

Swift

func celsiusToKelvin() -> Double

Return Value

A double value representing the temperature in Kelvin.


                    
                    
                    kelvinToCelsius()

Converts the temperature from Kelvin to Celsius.

Example:

let kelvinTemperature = 77.0
let celsiusTemperature = klevinTemperature.klevinToCelsius()
print(celsiusTemperature) // Output: -196.15

Declaration

Swift

func kelvinToCelsius() -> Double

Return Value

A double value representing the temperature in Celsius.


                    
                    
                    fahrenheitToKelvin()

Converts the temperature from Fahrenheit to Kelvin.

Example:

let fahrenheitTemperature = 10
let kelvinTemperature = fahrenheitTemperature.fahrenheitToKelvin()
print(kelvinTemperature) // Output: 260.93

Declaration

Swift

func fahrenheitToKelvin() -> Double

Return Value

A double value representing the temperature in Kelvin.


                    
                    
                    KelvinToFahrenheit()

Converts the temperature from Kelvin to Fahrenheit.

Example:

let kelvinTemperature = 300.0
let fahrenheitTemperature = kelvinTemperature.kelvinToFahrenheit()
print(fahrenheitTemperature) // Output: 80.33

Declaration

Swift

func KelvinToFahrenheit() -> Double

Return Value

A double value representing the temperature in Fahrenheit.


                    
                    
                    kilometerToMiles()

Converts the distance from kilometers to miles.

Example:

  let kilometers = 10.0
  let miles = kilometers.kilometerToMiles()
  print(miles) // Output: 6.21371

Declaration

Swift

func kilometerToMiles() -> Double

Return Value

A double value representing the distance in miles.

milesToKilometer()
Converts the distance from miles to kilometers.

Example:
```
  let miles = 6.21371
  let kilometers = miles.milesToKilometer()
  print(kilometers) // Output: 10.0
```
Declaration
Swift

func milesToKilometer() -> Double
Return Value

A double value representing the distance in kilometers.


                    
                    
                    kwToPs()

Converts power from kilowatts to horsepower.

Example:

  let kilowatts = 50.0
  let horsepower = kilowatts.kwToPs()
  print(horsepower) // Output: 67.99

Declaration

Swift

func kwToPs() -> Double

Return Value

A double value representing the power in horsepower.


                    
                    
                    psToKw()

Converts power from horsepower to kilowatts.

Example:

  let horsepower = 67.99
  let kilowatts = horsepower.psToKw()
  print(kilowatts) // Output: 50.0

Declaration

Swift

func psToKw() -> Double

Return Value

A double value representing the power in kilowatts.


                    
                    
                    roundedDecimal(to:mode:)

Convert Double to Decimal, rounding it to scale decimal places.

Declaration

Swift

func roundedDecimal(to scale: Int = 0, mode: NSDecimalNumber.RoundingMode = .plain) -> Decimal

Parameters

`scale`	How many decimal places to round to. Defaults to `0`.
`mode`	The preferred rounding mode. Defaults to `.plain`.

Return Value

The rounded Decimal value.