Fix broken Swift 3.2 build. (#3556)

.travis.yml

@@ -43,7 +43,8 @@ jobs:
       - gem install cocoapods
       - pod repo update
       - pod lib lint ReactiveCocoa.podspec
-      - pod lib lint ReactiveMapKit.podspec --swift-version=3.2
+      - pod lib lint ReactiveCocoa.podspec --swift-version=3.2
+      - pod lib lint ReactiveMapKit.podspec
       env:
         - JOB=PODSPEC
     - script: carthage build --cache-builds --no-skip-current

CHANGELOG.md

@@ -1,6 +1,8 @@
 # master
 *Please put new entries at the top.
 
+1. Fix an issue preventing ReactiveCocoa from being built with the Swift 3.2 language mode. (#3556)
+
 # 7.1.0-rc.1
 1. Requires ReactiveSwift 3.1.0 Release Candidate 1. (#3555)
 

ReactiveCocoa/AppKit/NSTextView.swift

@@ -4,7 +4,11 @@ import enum Result.NoError
 
 extension Reactive where Base: NSTextView {
 	private var notifications: Signal<Notification, NoError> {
+		#if swift(>=4.0)
 		let name = NSTextView.didChangeNotification
+		#else
+		let name = Notification.Name.NSControlTextDidChange
+		#endif
 
 		return NotificationCenter.default
 			.reactive
@@ -15,7 +19,14 @@ extension Reactive where Base: NSTextView {
 	/// A signal of values in `String` from the text field upon any changes.
 	public var continuousStringValues: Signal<String, NoError> {
 		return notifications
-			.map { ($0.object as! NSTextView).string }
+			.map { notification in
+				let textView = notification.object as! NSTextView
+				#if swift(>=4.0)
+				return textView.string
+				#else
+				return textView.string ?? ""
+				#endif
+			}
 	}
 
 	/// A signal of values in `NSAttributedString` from the text field upon any