我可以帮助您翻译以下内容:
我正在尝试转换字符串:
let time = "7:30"
转换成整数:
let hour : Int = 7
let minutes : Int = 30
我目前正在循环遍历这个字符串:
for char in time.characters {
}
但我不知道如何将字符转换为整数。非常感谢您的帮助。
String.componentsSeparatedByString
将time
字符串分成多个部分:import Foundation
let time = "7:30"
let timeParts = time.componentsSeparatedByString(":")
if timeParts.count == 2 {
if let hour = Int(timeParts[0]),
let minute = Int(timeParts[1]) {
// use hour and minute
}
}
如果您不想 import Foundation
,您可以使用以下方法将时间字符串拆分为部分:
let timeParts = time.characters.split(":").map(String.init)
@alex_p和@mixel的答案是正确的,但也可以使用Swift的split
函数来实现:
let time = "7:30"
let components = time.characters.split { $0 == ":" } .map { (x) -> Int in return Int(String(x))! }
let hours = components[0]
let minutes = components[1]
:
字符来分割字符串,然后将结果转换为整数:let timeStringArray = time.componentsSeparatedByString(":")
if timeStringArray.count == 2 {
hour = timeStringArray[0].toInt
minutes = timeStringArray[1].toInt()
}