swift - 如何解决字符串大写问题

Question

我的目标很简单:

Date() 中的 2 个大写字母。

func getWeekday(booking: ClientBooking) {

    let formatter = CoreServices.getDateFormatter()
    formatter.dateFormat = "EEEEEE"

    let weekday = formatter.string(from: booking.date)

    print("weekday = \(weekday)")
    print("weekday.capitalized = \(weekday.capitalized)")

    self.weekdayLabel.text = weekday.capitalized

}

问题。 2 个打印语句导致:

weekday = Fr
weekday.capitalized = Fr

label.text 也是如此。我错过了什么？非常感谢您的帮助。

(当然应该是 FR)

Answer 1

来自NSString.capitalized documentation :

A capitalized string is a string with the first character in each word changed to its corresponding uppercase value, and all remaining characters set to their corresponding lowercase values.

我认为您会对同一页面的“另请参阅”部分中提到的这些属性之一感到满意:

var uppercased: String

An uppercase representation of the string.

var localizedUppercase: String

Returns a version of the string with all letters converted to uppercase, taking into account the current locale.