added extensions.

Added extensions of CALayer, UIView, String, UIColor, NSNumber, UITextField, UIScrollView

Author: shoaibcheema

CALayer+Extension.swift

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+//
+//  CALayer+Extension.swift
+//  SHoaib
+//
+//  Created by Shoaib Sarwar Cheema on 26/05/2016.
+//  Copyright © 2016. All rights reserved.
+//
+
+import UIKit
+
+extension CALayer {
+    
+    func addBorder(_ edge: UIRectEdge, color: UIColor, thickness: CGFloat) {
+        
+        let border = CALayer()
+        
+        switch edge {
+        case UIRectEdge.top:
+            border.frame = CGRect(x: 0, y: 0, width: self.bounds.width, height: thickness)
+            break
+        case UIRectEdge.bottom:
+            border.frame = CGRect(x: 0, y: self.frame.height - thickness, width: self.frame.width, height: thickness)
+            break
+        case UIRectEdge.left:
+            border.frame = CGRect(x: 0, y: 0, width: thickness, height: self.bounds.height)
+            break
+        case UIRectEdge.right:
+            border.frame = CGRect(x: self.frame.width - thickness, y: 0, width: thickness, height: self.bounds.height)
+            break
+        default:
+            break
+        }
+        
+        border.backgroundColor = color.cgColor;
+        
+        self.addSublayer(border)
+    }
+    
+}

NSNumber+Extension.swift

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+//
+//  Int+Extension.swift
+//  Shoaib
+//
+//  Created by Shoaib Sarwar Cheema on 07/04/2016.
+//  Copyright © 2016. All rights reserved.
+//
+
+import Foundation
+
+extension NSNumber {
+    func format(_ f: String) -> String {
+        return String(format: "%\(f)f", self)
+    }
+}
+
+extension Int {
+    func boolValue() ->Bool {
+        switch self {
+        case 0:
+            return false
+        default:
+            return true
+        }
+    }
+}
+extension Bool {
+    func intValue() ->Int {
+        switch self {
+        case false:
+            return 0
+        default:
+            return 1
+        }
+    }
+}
+
+
+extension Int {
+    func format(_ f: String) -> String {
+        return String(format: "%\(f)d", self)
+    }
+}
+
+extension Float {
+    func format(_ f: String) -> String {
+        return String(format: "%\(f)f", self)
+    }
+}
+
+extension Double {
+    func format(_ f: String) -> String {
+        return String(format: "%\(f)f", self)
+    }
+}

String+Extensions.swift

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+//
+//  String+Extension.swift
+//  Shoaib
+//
+//  Created by Shoaib Sarwar Cheema on 14/10/2015.
+//  Copyright © 2015. All rights reserved.
+//
+
+import Foundation
+
+extension String {
+    
+    mutating func removeAllSpaces() {
+        replaceOccurrences(" ", withString: "")
+    }
+    var stringByRemovingExcessiveSpaces: String {
+        let components = self.components(separatedBy: CharacterSet.whitespaces)
+        let filtered = components.filter({!$0.isEmpty})
+        return filtered.joined(separator: " ")
+    }
+    
+    mutating func replaceOccurrences(_ target: String, withString: String)
+    {
+        self = replacingOccurrences(of: target, with: withString)
+    }
+    
+    mutating func encodeForUrl() {
+        self = self.addingPercentEncoding( withAllowedCharacters: CharacterSet.urlQueryAllowed)!
+    }
+    func encodedStringForUrl() -> String {
+        let string = self
+        return string.addingPercentEncoding( withAllowedCharacters: CharacterSet.urlQueryAllowed)!
+    }
+    
+    func hasAnyPrefix(Prefixes prefixes: [String]) -> Bool{
+        
+        for prefix in prefixes{
+            if self.hasPrefix(prefix){
+                return true
+            }
+        }
+        return false
+    }
+    
+    static func randomStringWithLength (_ len : Int) -> String {
+        
+        let letters : NSString = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+        let randomString : NSMutableString = NSMutableString(capacity: len)
+        
+        for _ in 1...(len-1) {
+            let length = UInt32 (letters.length)
+            let rand = arc4random_uniform(length)
+            randomString.appendFormat("%C", letters.character(at: Int(rand)))
+        }
+        
+        return randomString as String
+    }
+    
+    func fromBase64() -> String? {
+        guard let data = Data(base64Encoded: self) else {
+            return nil
+        }
+        
+        return String(data: data, encoding: .utf8)
+    }
+    
+    func toBase64() -> String {
+        return Data(self.utf8).base64EncodedString()
+    }
+}

UIColor+Extension.swift

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+//
+//  UIColor+Extension.swift
+//  Shoaib
+//
+//  Created by Shoaib Sarwar Cheema on 14/10/2015.
+//  Copyright © 2015. All rights reserved.
+//
+
+import UIKit
+
+extension UIColor {
+    convenience init(rgb: Int, alpha: CGFloat) {
+        let r = CGFloat((rgb & 0xFF0000) >> 16)/255
+        let g = CGFloat((rgb & 0xFF00) >> 8)/255
+        let b = CGFloat(rgb & 0xFF)/255
+        self.init(red: r, green: g, blue: b, alpha: alpha)
+    }
+    
+    convenience init(rgb: Int) {
+        self.init(rgb:rgb, alpha:1.0)
+    }
+}

UIScrollView+Extension.swift

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+//
+//  UIScrollView+Extension.swift
+//  Shoaib
+//
+//  Created by Shoaib Sarwar Cheema on 19/10/2016.
+//  Copyright © Arhamsoft. All rights reserved.
+//
+
+import UIKit
+
+extension UIScrollView {
+    func scrollToBottom(animated: Bool) {
+        self.setContentOffset(CGPoint(x: 0, y: max(self.contentSize.height - self.bounds.size.height, 0) ), animated: animated)
+
+    }
+}

UITextField+Extension.swift

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+//
+//  UITextField+Extension.swift
+//  Shoaib
+//
+//  Created by Shoaib Sarwar Cheema on 18/07/2017.
+//  Copyright © 2017. All rights reserved.
+//
+
+import UIKit
+
+extension UITextField {
+    @IBInspectable var placeholderColor: UIColor {
+        get {
+            guard let currentAttributedPlaceholderColor = attributedPlaceholder?.attribute(NSForegroundColorAttributeName, at: 0, effectiveRange: nil) as? UIColor else { return UIColor.clear }
+            return currentAttributedPlaceholderColor
+        }
+        set {
+            guard let currentAttributedString = attributedPlaceholder else { return }
+            let attributes = [NSForegroundColorAttributeName : newValue]
+            
+            attributedPlaceholder = NSAttributedString(string: currentAttributedString.string, attributes: attributes)
+        }
+    }
+}
+
+class LinedTextField: UITextField {
+    
+    required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+        
+        setupView()
+    }
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        
+        setupView()
+        
+    }
+    
+    func setupView(){
+        
+        borderStyle = .none
+        addBorder(.bottom, color: .white, thickness: 1)
+        placeholderColor = UIColor(red: 1, green: 1, blue: 1, alpha: 0.7)
+        textColor = UIColor.white
+        clipsToBounds = true
+    }
+}

UIView+Extension.swift

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+//
+//  UIView+Extension.swift
+//  Shoaib
+//
+//  Created by Shoaib Sarwar Cheema on 25/02/2016.
+//  Copyright © 2016. All rights reserved.
+//
+
+import UIKit
+
+@IBDesignable extension UIView {
+    
+    @IBInspectable var borderColor:UIColor? {
+        set {
+            layer.borderColor = newValue!.cgColor
+        }
+        get {
+            if let color = layer.borderColor {
+                return UIColor(cgColor:color)
+            }
+            else {
+                return nil
+            }
+        }
+    }
+    @IBInspectable var borderWidth:CGFloat {
+        set {
+            layer.borderWidth = newValue
+        }
+        get {
+            return layer.borderWidth
+        }
+    }
+    @IBInspectable var cornerRadius:CGFloat {
+        set {
+            layer.cornerRadius = newValue
+            clipsToBounds = newValue > 0
+        }
+        get {
+            return layer.cornerRadius
+        }
+    }
+    @IBInspectable var padding:CGFloat {
+        
+        set {
+            self.bounds = self.frame.insetBy(dx: padding, dy: padding);
+        }
+        get {
+            return self.bounds.origin.x
+        }
+    }
+    
+    class func loadFromNibNamed(_ nibNamed: String, bundle : Bundle? = nil,owner: AnyObject) -> UIView? {
+        return UINib(
+            nibName: nibNamed,
+            bundle: bundle
+            ).instantiate(withOwner: owner, options: nil)[0] as? UIView
+    }
+    
+    func addBorder(_ edge: UIRectEdge, color: UIColor, thickness: CGFloat) {
+        self.layer.addBorder(edge, color: color, thickness: thickness)
+    }
+}