Swift Date and Currency Format

main.swift

import Foundation

// 1. Current Date
let date = Date()

// 2. Create Formatter
let dateFormatter = DateFormatter()

// 3. Display Date short format
print("---")

// 3.1 Portuguese Brazil Locale (pt_BR)
dateFormatter.locale = Locale(identifier: "pt_BR")
dateFormatter.setLocalizedDateFormatFromTemplate("dd/MM/yyyy HH:mm") // // set template after setting locale
print("[BR] \(dateFormatter.string(from: date))")

// 3.2 US English Locale (en_US)
dateFormatter.locale = Locale(identifier: "en_US")
dateFormatter.setLocalizedDateFormatFromTemplate("MM/dd/yyyy hh:mm") // set template after setting locale
print("[US] \(dateFormatter.string(from: date))")

// 4 Display Date medium format
print("---")

// 4.1 Portuguese Brazil Locale (pt_BR)
dateFormatter.locale = Locale(identifier: "pt_BR")
dateFormatter.setLocalizedDateFormatFromTemplate("dd MMM - HH:mm") // // set template after setting locale
print("[BR] \(dateFormatter.string(from: date))")

// 4.2 US English Locale (en_US)
dateFormatter.locale = Locale(identifier: "en_US")
dateFormatter.setLocalizedDateFormatFromTemplate("dd MMM - hh:mm") // // set template after setting locale
print("[US] \(dateFormatter.string(from: date))")

// 5 Display Date large format
print("---")

// 5.1 Portuguese Brazil Locale (pt_BR)
dateFormatter.locale = Locale(identifier: "pt_BR")
dateFormatter.dateFormat = "EEEE dd MMM 'às' HH:mm" // // set template after setting locale
print("[BR] \(dateFormatter.string(from: date))")

// 5.2 US English Locale (en_US)
dateFormatter.locale = Locale(identifier: "en_US")
dateFormatter.dateFormat = "EEEE dd MMM 'at' hh:mm" // // set template after setting locale
print("[US] \(dateFormatter.string(from: date))")

// 6 Display Currency Format
print("---")

let numbers = [1.0, 10.0, 100.0, 1000.0, 10000.0, 100000.0, 1000000.0]

for number in numbers {
    print("---")
    let formatter = NumberFormatter()
    formatter.numberStyle = .currency
    // 6.1 pt-BR
    formatter.locale = Locale(identifier: "pt_BR")
    print("[BR] \(formatter.string(from: number as NSNumber)!)")
    // 6.2 US
    formatter.locale = Locale(identifier: "en_US")
    print("[US] \(formatter.string(from: number as NSNumber)!)")
}

output.txt

---
[BR] 11/01/2021 20:32
[US] 01/11/2021, 8:32 PM
---
[BR] 11 de jan 20:32
[US] Jan 11, 8:32 PM
---
[BR] segunda-feira 11 jan às 20:32
[US] Monday 11 Jan at 08:32
---
[BR] R$ 1,00
[US] $1.00
---
[BR] R$ 10,00
[US] $10.00
---
[BR] R$ 100,00
[US] $100.00
---
[BR] R$ 1.000,00
[US] $1,000.00
---
[BR] R$ 10.000,00
[US] $10,000.00
---
[BR] R$ 100.000,00
[US] $100,000.00
---
[BR] R$ 1.000.000,00
[US] $1,000,000.00