In Swift, i cant cast Int to String by:
var iString:Int = 100
var strString = String(iString)
But my variable in Int? , there for error:
You can use string interpolation.
let x = 100
let str = "\(x)"
if x
is an optional you can use optional binding
var str = ""
if let v = x {
str = "\(v)"
}
println(str)
if you are sure that x
will never be nil
, you can do a forced unwrapping
on an optional value
.
var str = "\(x!)"
In a single statement you can try this
let str = x != nil ? "\(x!)" : ""
Based on @RealMae's comment, you can further shorten this code using the nil coalescing operator (??)
let str = x ?? ""