ios - Errors thrown from here are not handled....bug -


could please explain why i'm getting error based on other code located?

enter image description here

why compile fine: 

func serializejsondata(jsondata: nsdata) -> nsdictionary {     {         let searchresultsjson: nsdictionary = try nsjsonserialization.jsonobjectwithdata(jsondata, options: .mutablecontainers) as! nsdictionary         return searchresultsjson     } catch let error nserror {         print("json error: \(error.localizeddescription)")         let returndictionary = [:]         return returndictionary     } }   func parseforms(formsarray: nsarray) -> nsarray {      var retval = [searchformobject]()     form in formsarray as! nsdictionary { }      return retval }

when when switch methods around this: 

func parseforms(formsarray: nsarray) -> nsarray {      var retval = [searchformobject]()     form in formsarray as! nsdictionary { }      return retval }  func serializejsondata(jsondata: nsdata) -> nsdictionary {     {         let searchresultsjson: nsdictionary = try nsjsonserialization.jsonobjectwithdata(jsondata, options: .mutablecontainers) as! nsdictionary         return searchresultsjson     } catch let error nserror {         print("json error: \(error.localizeddescription)")         let returndictionary = [:]         return returndictionary     } }

i error on 

let searchresultsjson: nsdictionary = try nsjsonserialization.jsonobjectwithdata(jsondata, options: .mutablecontainers) as! nsdictionary

is ide thing or have actual error in code??


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