Swift 前导加 0 的处理
2019/12/01
let hours = 3
let minutes = 15
let seconds = 7
print(String(format: "%02d:%02d:%02d", hours, minutes, seconds))
// 03:15:07参考: https://stackoverflow.com/questions/25566581/leading-zeros-for-int-in-swift
2019/12/01
let hours = 3
let minutes = 15
let seconds = 7
print(String(format: "%02d:%02d:%02d", hours, minutes, seconds))
// 03:15:07参考: https://stackoverflow.com/questions/25566581/leading-zeros-for-int-in-swift