ios - Swift 3.0 Couldn't get required object pointer (substituting NULL): Couldn't load 'self' because its value couldn't be evaluated -


when executing code:

public enum month : string {     case january  = "jan"     case february = "feb"     case march = "mar"     case april = "apr"     case may = "may"     case june = "jun"     case july = "jul"     case august = "aug"     case september = "sep"     case october = "oct"     case november = "nov"     case december = "dec"      func todate() -> date {         let dateformatter = dateformatter()         dateformatter.dateformat = "dd.mmm.yyyy hh:mm a"         let datestring = "01.\(self.rawvalue).2016 12:00 pm"         return dateformatter.date(from: datestring)!     } }

i'm getting:

fatal error: unexpectedly found nil while unwrapping optional value

when try printing "po dateformatter.date(from: datestring)!" crash happening:

fatal error: unexpectedly found nil while unwrapping optional value error: warning: couldn't required object pointer (substituting null): couldn't load 'self' because value couldn't evaluated

error: execution interrupted, reason: exc_breakpoint (code=1, subcode=0x100c551ec). process has been returned state before expression evaluation.

this happening on iphone 6s running ios 10.1.1 , not happening on of simulators , on device running ios 9.x.x

anyone has idea whats going on , "couldn't load 'self' because value couldn't evaluated" means.

i tried in new project code , can still reproduce error.

even hardcoding month, without self part gives same error:

let datestring = "01.nov.2016 12:00 pm"

update

for coming proper way construct date object this:

let calendar = calendar.current var components = datecomponents() components.day = 1 components.month = month components.year = year components.hour = 12 components.minute = 00  let date = calendar.date(from: components)!

your code give totally incorrect results in less 2 months time. , crash if user's locale not english speaking.


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