Open Radar

 
Summary:
Printable protocol doesn't appear to affect println in playgrounds

Steps to Reproduce:
Use attached playground code

Expected Results:
Console output would reflect the description given

Actual Results:
V11lldb_expr_08MyStruct (has 1 child)

Regression:


Notes:
// Playground - noun: a place where people can play

import UIKit

var array = Array(count: 7, repeatedValue:NSObject())

var names = array.map{$0.description}.reduce("Hi", combine: {$0 + $1})

names

// names is ~:
//["<NSObject: 0x10d015930>", "<NSObject: 0x10d015930>", "<NSObject: 0x10d015930>", "<NSObject: 0x10d015930>", "<NSObject: 0x10d015930>", "<NSObject: 0x10d015930>", "<NSObject: 0x10d015930>"]

struct MyStruct: Comparable, Printable {
    var variable: Int?
    var description: String {
        return "This is my struct (\(variable))"
    }
}

operator infix ~ {}

func == (lhs: MyStruct, rhs: MyStruct) -> Bool {
    return lhs.variable == rhs.variable
}

func ~ (lhs: MyStruct, rhs: MyStruct) -> MyStruct? {
    return MyStruct(variable:lhs.variable! % rhs.variable!)
}

func < (lhs: MyStruct, rhs: MyStruct) -> Bool {
    return lhs.variable < rhs.variable
}

var sta = MyStruct(variable:0)
var stb = MyStruct(variable:9)

sta == stb
sta ~ stb
sta >= stb

println(sta)