Example of subscript in Swift

subscript.swift

struct daysofaweek {
  private var days = [“Sunday”, “Monday”, “Tuesday”, “Wednesday”, “Thursday”, “Friday”, “saturday”]
  
  subscript(index: Int) -> String {
    get {
      return days[index]
    }
    set(newValue) {
      days[index] = newValue
    }
  }
}

var p = daysofaweek()
print(p[0]) // prints sunday
p[0] = “Monday”
print(p[0]) // prints Monday

// Source: https://medium.com/@abhimuralidharan/subscripts-in-swift-51e73cc5ddb5