I have a single point APIService as below
import Foundation import Alamofire import SwiftyJSON typealias Success = JSON -> Void typealias Failure = NSError? -> Void class APIService { private let BaseURL = "http://api.openweathermap.org/data/2.5" class var instance: APIService { struct Singleton { static let instance: APIService = APIService() } return Singleton.instance } func currentWeather(cityName: String, success:Success?, failure:Failure?) { let url = BaseURL + "/weather" Alamofire.request(.GET, url, parameters:["q" : cityName]) .responseJSON { (_, _, jsonObject, error) in if error != nil && failure != nil { failure!(error) } else { let json = JSON(jsonObject!) if success != nil { success!(json) } else { println(json) } } } } }
While I call this function elsewhere, like UIViewController, this is normal
import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() APIService.instance.currentWeather("San Gabriel", success: nil, failure: {error in println(error)}) } }
However, it compiles the error when I call func, like this
APIService.instance.currentWeather("San Gabriel", success: {json in println(json)}, failure: {error in println(error)}) 0 swift 0x0000000101f2da68 llvm::sys::PrintStackTrace(__sFILE*) + 40 1 swift 0x0000000101f2df54 SignalHandler(int) + 452 2 libsystem_platform.dylib 0x00007fff95838f1a _sigtramp + 26 3 libsystem_platform.dylib 0x00007fff5e9903d8 _sigtramp + 3373626584 4 swift 0x00000001013d1f8c swift::Lowering::SILGenFunction::emitIgnoredExpr(swift::Expr*) + 108 5 swift 0x00000001013f1829 swift::Lowering::SILGenFunction::visitBraceStmt(swift::BraceStmt*) + 297 6 swift 0x00000001013f48e8 swift::ASTVisitor<swift::Lowering::SILGenFunction, void, void, void, void, void, void>::visit(swift::Stmt*) + 152 7 swift 0x00000001013c0da1 swift::Lowering::SILGenFunction::emitValueConstructor(swift::ConstructorDecl*) + 5617 8 swift 0x000000010139c04a swift::Lowering::SILGenModule::emitConstructor(swift::ConstructorDecl*) + 666 9 swift 0x000000010139d8bb swift::SILModule::constructSIL(swift::Module*, swift::SourceFile*, swift::Optional<unsigned int>) + 475 10 swift 0x000000010139d968 swift::performSILGeneration(swift::SourceFile&, swift::Optional<unsigned int>) + 72 11 swift 0x0000000101273e18 frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 3432 12 swift 0x000000010127196d main + 1677 13 libdyld.dylib 0x00007fff93e515c9 start + 1 Stack dump: 0. Program arguments: 1. While silgen emitConstructor SIL function @_TFVSC20NSJSONReadingOptionsCfMS_FT_S_ for 'init' at <invalid loc>
If I put the function only in the UIViewController, everything will be alright, too wired, need help