Add @discardableResul to avoid warnings of unused variable

Author: LeoMobileDeveloper

Demo/Demo.xcodeproj/project.pbxproj

@@ -34,7 +34,6 @@
 		B3B543EE1F062A9800408912 /* DianpingTableviewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = B3B543121F062A9700408912 /* DianpingTableviewController.swift */; };
 		B3B543EF1F062A9800408912 /* ElasticHeaderTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = B3B543131F062A9700408912 /* ElasticHeaderTableViewController.swift */; };
 		B3B543F01F062A9800408912 /* failure@3x.png in Resources */ = {isa = PBXBuildFile; fileRef = B3B543141F062A9700408912 /* failure@3x.png */; };
-		B3B543F11F062A9800408912 /* Info.plist in Resources */ = {isa = PBXBuildFile; fileRef = B3B543151F062A9700408912 /* Info.plist */; };
 		B3B5442E1F062A9800408912 /* MainViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = B3B543521F062A9700408912 /* MainViewController.swift */; };
 		B3B5442F1F062A9800408912 /* QQVideoRefreshHeader.swift in Sources */ = {isa = PBXBuildFile; fileRef = B3B543531F062A9700408912 /* QQVideoRefreshHeader.swift */; };
 		B3B544301F062A9800408912 /* QQVideoTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = B3B543541F062A9700408912 /* QQVideoTableViewController.swift */; };
@@ -340,7 +339,6 @@
 				B3B543E01F062A9700408912 /* banner2.jpg in Resources */,
 				B3B544AB1F062A9800408912 /* youku_refreshing@3x.png in Resources */,
 				B3B543F01F062A9800408912 /* failure@3x.png in Resources */,
-				B3B543F11F062A9800408912 /* Info.plist in Resources */,
 				B3B543DE1F062A9700408912 /* Assets.xcassets in Resources */,
 				B3B544331F062A9800408912 /* success@3x.png in Resources */,
 				B3B544A61F062A9800408912 /* yahoo_logo@3x.png in Resources */,

Demo/Demo/MainViewController.swift

@@ -36,13 +36,14 @@ class MainViewController: UITableViewController {
         models.append(section1)
         models.append(section2)
         models.append(section3)
-        let header = self.tableView.setUpHeaderRefresh { [weak self] in
+        self.tableView.setUpHeaderRefresh { [weak self] in
             let delayTime = DispatchTime.now() + Double(Int64(2 * Double(NSEC_PER_SEC))) / Double(NSEC_PER_SEC)
             DispatchQueue.main.asyncAfter(deadline: delayTime) {
                 self?.tableView.endHeaderRefreshing(.success,delay:0.3)
             }
+        }.SetUp { (header) in
+            header.setThemeColor(themeColor: UIColor.blue)
         }
-        header.setThemeColor(themeColor: UIColor.blue)
         self.tableView.tableFooterView = UIView(frame: CGRect.zero)
     }
 

Source/Classes/PullToRefresh.swift

@@ -124,6 +124,7 @@ public protocol RefreshableLeftRight:class{
 public protocol SetUp {}
 public extension SetUp where Self: AnyObject {
     //Add @noescape to make sure that closure is sync and can not be stored
+    @discardableResult
     public func SetUp(_ closure: (Self) -> Void) -> Self {
         closure(self)
         return self
@@ -133,10 +134,12 @@ extension NSObject: SetUp {}
 
 //Header
 public extension UIScrollView{
+    @discardableResult
     public func setUpHeaderRefresh(_ action:@escaping ()->())->DefaultRefreshHeader{
         let header = DefaultRefreshHeader(frame:CGRect(x: 0,y: 0,width: self.frame.width,height: PullToRefreshKitConst.defaultHeaderHeight))
         return setUpHeaderRefresh(header, action: action)
     }
+    @discardableResult
     public func setUpHeaderRefresh<T:UIView>(_ header:T,action:@escaping ()->())->T where T:RefreshableHeader{
         let oldContain = self.viewWithTag(PullToRefreshKitConst.headerTag)
         oldContain?.removeFromSuperview()
@@ -170,10 +173,12 @@ public extension UIScrollView{
 
 //Footer
 public extension UIScrollView{
+    @discardableResult
     public func setUpFooterRefresh(_ action:@escaping ()->())->DefaultRefreshFooter{
         let footer = DefaultRefreshFooter(frame: CGRect(x: 0,y: 0,width: self.frame.width,height: PullToRefreshKitConst.defaultFooterHeight))
         return setUpFooterRefresh(footer, action: action)
     }
+    @discardableResult
     public func setUpFooterRefresh<T:UIView>(_ footer:T,action:@escaping ()->())->T where T:RefreshableFooter{
         let oldContain = self.viewWithTag(PullToRefreshKitConst.footerTag)
         oldContain?.removeFromSuperview()
@@ -215,10 +220,12 @@ public extension UIScrollView{
 
 //Left
 extension UIScrollView{
+    @discardableResult
     public func setUpLeftRefresh(_ action:@escaping ()->())->DefaultRefreshLeft{
         let left = DefaultRefreshLeft(frame: CGRect(x: 0,y: 0,width: PullToRefreshKitConst.defaultLeftWidth, height: self.frame.height))
         return setUpLeftRefresh(left, action: action)
     }
+    @discardableResult
     public func setUpLeftRefresh<T:UIView>(_ left:T,action:@escaping ()->())->T where T:RefreshableLeftRight{
         let oldContain = self.viewWithTag(PullToRefreshKitConst.leftTag)
         oldContain?.removeFromSuperview()
@@ -237,10 +244,12 @@ extension UIScrollView{
 }
 //Right
 extension UIScrollView{
+    @discardableResult
     public  func setUpRightRefresh(_ action:@escaping ()->())->DefaultRefreshRight{
         let right = DefaultRefreshRight(frame: CGRect(x: 0 ,y: 0 ,width: PullToRefreshKitConst.defaultLeftWidth ,height: self.frame.height ))
         return setUpRightRefresh(right, action: action)
     }
+    @discardableResult
     public func setUpRightRefresh<T:UIView>(_ right:T,action:@escaping ()->())->T where T:RefreshableLeftRight{
         let oldContain = self.viewWithTag(PullToRefreshKitConst.rightTag)
         oldContain?.removeFromSuperview()