ios - Match the data type of a object in Swift -

how match data type of object in swift?

like:

var xyz :     xyz = 1;     switch xyz  {     case let x xyz as?anyobject[]:         println("\(x) anyobject type")     case let x xyz as?string[]:         println("\(x) string type")     case let x xyz as?int[]:         println("\(x) int type")     case let x xyz as?double[]:         println("\(x) double type")     case let x xyz as?float[]:         println("\(x) float type")     default:println("none")     } 

in case switch case run default case

change var xyz : anyobject var xyz : any , add match case

case let x int: 

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from repl

  1> var : = 1 a: int = <read memory 0x7fec8ad8bed0 failed (0 of 8 bytes read)>   2> switch { case let x int: println("int"); default: println("default"); } int 

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from the swift programming language

you can use , operators in switch statement’s cases discover specific type of constant or variable known of type or anyobject. example below iterates on items in things array , queries type of each item switch statement. several of switch statement’s cases bind matched value constant of specified type enable value printed:

for thing in things {     switch thing {     case 0 int:         println("zero int")     case 0 double:         println("zero double")     case let someint int:         println("an integer value of \(someint)")     case let somedouble double somedouble > 0:         println("a positive double value of \(somedouble)")     case double:         println("some other double value don't want print")     case let somestring string:         println("a string value of \"\(somestring)\"")     case let (x, y) (double, double):         println("an (x, y) point @ \(x), \(y)")     case let movie movie:         println("a movie called '\(movie.name)', dir. \(movie.director)")     default:         println("something else")     } }  // 0 int // 0 double // integer value of 42 // positive double value of 3.14159 // string value of "hello" // (x, y) point @ 3.0, 5.0 // movie called 'ghostbusters', dir. ivan reitman 

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note:

var xyz : anyobject = 1 

will give nsnumber because int not object auto convert nsnumber object