[Swift Development] using a closed packet value (Typealias)

Source: Internet
Author: User

Tags: let float block oar tle style with Var nil

Using closures in swift to achieve the value of two interfaces

For example, there are Class A and Class B.

Class B

// declare closed packet typealias valueblock = (Float)---Var returnprice:valueblock?  // call this closure Self.returnprice? (Price)

Class A

Let SB = Uistoryboard (name:"Main", bundle:nil)        = Sb.instantiateviewcontrollerwithidentifier ("keypadviewvc"as! ) KEYPADVIEWVC        //Class B callback in "%.2f", Price), ForState:UIControlState.Normal)}        true, Completion:nil)

[Swift development] uses closure value (Typealias)

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