Created
January 25, 2015 16:34
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Piping functions with operator overload
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| import UIKit | |
| import Foundation | |
| infix operator => { associativity right} | |
| // Start with input | |
| func => ( left: String, right: (String)->Void ) -> () -> Void { | |
| func returnFunc () -> Void | |
| { | |
| right(left); | |
| } | |
| return returnFunc; | |
| } | |
| // Handling result | |
| func => ( left: (String, (String)->Void)-> Void, right: (String)->Void ) -> (String)->() { | |
| func returnFunc(result: String){ | |
| left(result, right); | |
| } | |
| return returnFunc; | |
| } | |
| func addAToEnd(input: String, done: (String) -> Void) -> Void | |
| { | |
| let output:String = input + "A"; | |
| done(output); | |
| } | |
| func padWithB(input: String, done: (String) -> Void) -> Void | |
| { | |
| let output:String = "B" + input + "B"; | |
| done(output); | |
| } | |
| func stringOutput(result: String) -> Void{ | |
| println("The final result was: " + result); | |
| } | |
| let pipe = "smack" => | |
| addAToEnd => | |
| addAToEnd => | |
| addAToEnd => | |
| addAToEnd => | |
| padWithB => | |
| stringOutput; | |
| pipe(); |
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