SwiftDevUtility

A Swift development tool which can make your programming easy.

Table of Contents

• General info
• Requirement
• Installation
• Usage
• Contact
• License

General info

This tool provides some useful functions which can be often used in your programming.It extends some Swift Standard Library and create some useful structs.

Requirement

• iOS 11+
• Swift 4.2

Installation

Cocoapods:

pod 'SwiftDevUtility'

Carthage:

github "chkkassd/SwiftDevUtility"

Usage

• StringExtension
  • public var md5String: String
  • public var convertedDate: Date?
  • public static func timeFormatString(_ seconds: Double) -> String
• ArrayExtension
  • public func reject(_ predicate: (Element) -> Bool) -> [Element]
  • public func allMatch(_ predicate: (Element) -> Bool) -> Bool
• DictionaryExtension
  • public mutating func merge<S>(_ sequence: S) where S: Sequence, S.Iterator.Element == (key: Key, value: Value)
  • public init<S: Sequence>(_ sequence: S) where S.Iterator.Element == (key: Key, value: Value)
  • public func valueMap<T>(_ transform:(Value) -> T) -> [Key:T]
• SequenceExtension
  • public func unique() -> [Iterator.Element]
• DateExtension
  • public var standardTimeString: String
  • public var weekdayIndex: Int?
  • public var weekdayEnum: WeekDay
  • public var weekdayString: String
  • public var firstDayDate: Date?
  • public var lastDayDate: Date?
• URLExtension
  • public var pathString: String?
• UIImageExtension
  • public func scaledImage(_ rect: CGRect, _ compressionQuality: CGFloat) -> UIImage?
• UIViewExtension
  • @IBInspectable public var viewCornerRadius: CGFloat
  • @IBInspectable public var viewBorderWidth: CGFloat
  • @IBInspectable public var viewBorderColor: UIColor
• AppInfoHelper
  • public static var appVersion: String?
  • public static var appBuildVersion: String?
  • public static var appName: String?
• DirectoryPath
  • public static func pathOfDocuments() -> String
  • public static func pathOfTemporary() -> String
  • public static func pathOfCache() -> String
  • public static func urlInDocument(with component: String) -> URL
  • public static func urlInTemporary(with component: String) -> URL
  • public static func urlInCache(with component: String) -> URL
  • public static func directoryPathInDocument(withDirectoryName name: String) -> String
  • public static func directoryURLInDocument(withDirectoryName name: String) -> URL
• ScreenShot
  • public static func screenShot(withView view: UIView) -> UIImage?
• SSFSortDescriptor

StringExtension

public var md5String: String

A read-only computed property that return the md5 string from the origin string.

"Hello world".md5String//3e25960a79dbc69b674cd4ec67a72c62

---

public var convertedDate: Date?

Convert a ISO8601 string(yyyy-MM-dd'T'HH:mm:ssZ) to Date.

let time = "2019-3-12T12:34:23+0000"
let dateTime = time.convertedDate//Optional(2019-03-12 12:34:23 +0000)

---

public static func timeFormatString(_ seconds: Double) -> String

Convert seconds to a string with style of "mm:ss"

String.timeFormatString(188.8)//03:08

ArrayExtension

public func reject(_ predicate: (Element) -> Bool) -> [Element]

Delete the element which matchs the predicate.

let a = [1,2,3,4,5,6]
let b = a.reject{$0 % 2 == 0}//[1,3,5]

---

public func allMatch(_ predicate: (Element) -> Bool) -> Bool

Weather all elements match the predicate.

let a = [1,2,3,4,5,6]
let c = a.allMatch{$0 > 0}//true

DictionaryExtension

public mutating func merge<S>(_ sequence: S) where S: Sequence, S.Iterator.Element == (key: Key, value: Value)

Merge a sequence into a dictionary.

var a = ["name": "jack", "age": "10"]
let b = ["name": "Tom", "age": "10", "address": "shanghai"]
a.merge(b)//["address": "shanghai", "age": "10", "name": "Tom"]

---

init<S: Sequence>(_ sequence: S) where S.Iterator.Element == (key: Key, value: Value)

Initail a dictionary by a sequence,such as [(key:xx, value:xx)].

let c = [("name", "Peter"), ("age", "20")]
let d = Dictionary(c)//["age": "20", "name": "Peter"]

---

public func valueMap<T>(_ transform:(Value) -> T) -> [Key:T]

A dictionary's value map to a new value with the transform,then return a new dictionary.

let e = ["height": 80, "width": 100]
let f = e.valueMap { $0 / 2 }//["height": 40, "width": 50]

SequenceExtension

public func unique() -> [Iterator.Element]

Find the unique element in the sequence,it will drop the repeated element.

let a = [1,2,3,4,4,8,8]
let b = a.unique()//[1, 2, 3, 4, 8]

DateExtension

public var standardTimeString: String

Convert date to string(yyyy-MM-dd HH:mm:ss)

let date = Date()
date.standardTimeString//"2019-03-06 14:14:34"

---

public var weekdayIndex: Int?

Convert a date to weekdayIndex(saturday is 0, sunday is 1, Monday is 2,...).

let date = Date()
date.weekdayIndex//Optional(4)

---

public var weekdayEnum: WeekDay

Convert a date to weekday enum..

let date = Date()
date.weekdayEnum//WED

---

public var weekdayString

Convert a date to chinese weekday string.

let date = Date()
date.weekdayString//"周三"

---

public var firstDayDate: Date?

Fetch the first day of a week by a date.

let date = Date()
date.firstDayDate//Optional(2019-03-02 06:14:34 +0000)

---

public var lastDayDate: Date?

Fetch the last day of a week by a date.

let date = Date()
date.lastDayDate//Optional(2019-03-08 06:14:34 +0000)

URLExtension

public var pathString: String?

Convert a file url to a path string

let fileURL = DirectoryPath.urlInDocument(with: "test")//file:///Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/099F3AE8-8743-4466-B147-F84A91AE8C17/Documents/test
let filePath = fileURL.pathString//Optional("/Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/099F3AE8-8743-4466-B147-F84A91AE8C17/Documents/test")

UIImageExtension

public func scaledImage(_ rect: CGRect, _ compressionQuality: CGFloat) -> UIImage?

Scale a big image to a small image with specifial rect.

let aImage = UIImage(named: "water")
aImage.size//Optional((180.0, 180.0))
let bImage = aImage?.scaledImage(CGRect(x: 0, y: 0, width: 20, height: 20), 1.0)
bImage.size//Optional((20.0, 20.0))

UIViewExtension

@IBInspectable public var viewCornerRadius: CGFloat

Discribe corner radius of a view and reflect in storyboard.

---

@IBInspectable public var viewBorderWidth: CGFloat

Discribe border width of a view and reflect in storyboard.

---

@IBInspectable public var viewBorderColor: UIColor

Discribe border color of a view and reflect in storyboard.

AppInfoHelper

public static var appVersion: String?

Fetch the app version.

AppInfoHelper.appVersion//Optional("1.0.1")

---

public static var appBuildVersion: String?

Fetch the app build version

AppInfoHelper.appBuildVersion//Optional("1")

---

public static var appName: String?

Fetch the app name

AppInfoHelper.appName//Optional("SwiftDevUtilityDemo")

DirectoryPath

public static func pathOfDocuments() -> String

Document directory path

DirectoryPath.pathOfDocuments()// /Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/11F3E559-1365-473D-AFA5-C7C10AD2800A/Documents

---

public static func pathOfTemporary() -> String

Temporary directory path

DirectoryPath.pathOfTemporary()// /Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/11F3E559-1365-473D-AFA5-C7C10AD2800A/tmp/

---

public static func pathOfCache() -> String

Cache directory path

DirectoryPath.pathOfCache()// /Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/11F3E559-1365-473D-AFA5-C7C10AD2800A/Library/Caches

---

public static func urlInDocument(with component: String) -> URL

Create URL in document compent

DirectoryPath.urlInDocument(with: "haha")//file:///Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/11F3E559-1365-473D-AFA5-C7C10AD2800A/Documents/haha

---

public static func urlInTemporary(with component: String) -> URL

Create URL in temporary compent

DirectoryPath.urlInTemporary(with: "hihi")//file:///Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/331A1DE9-81A4-4322-88BD-334E34AEBD06/tmp/hihi

---

public static func urlInCache(with component: String) -> URL

Create URL in cache compent

DirectoryPath.urlInCache(with: "hehe")//file:///Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/331A1DE9-81A4-4322-88BD-334E34AEBD06/Library/Caches/hehe

---

public static func directoryPathInDocument(withDirectoryName name: String) -> String

Creat directory path at document directory.

DirectoryPath.directoryPathInDocument(withDirectoryName: "test1")// /Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/331A1DE9-81A4-4322-88BD-334E34AEBD06/Documents/test1

---

public static func directoryURLInDocument(withDirectoryName name: String) -> URL

Creat directory URL at document directory

DirectoryPath.directoryURLInDocument(withDirectoryName: "test2")//file:///Users/xxx/Library/Developer/CoreSimulator/Devices/761F483C-6A5C-4A4F-8F3C-7FDABBEC5A86/data/Containers/Data/Application/331A1DE9-81A4-4322-88BD-334E34AEBD06/Documents/test2

ScreenShot

public static func screenShot(withView view: UIView) -> UIImage?

Crop a specific view

let image = SSFScreenShot.screenShot(withView: aView)//It will crop aView and return a image

SSFSortDescriptor

public typealias SortDescriptor<T> = (T, T) -> Bool

The documention of the function type (T, T) -> Bool.

infix operator |>: LogicalDisjunctionPrecedence
public func |><T>(l: @escaping SortDescriptor<T>, r: @escaping SortDescriptor<T>) -> SortDescriptor<T>

Mix operator with two SortDescriptor type.

public static func makeDescriptor<Key, Value>(key: @escaping (Key) -> Value, _ isAscending: @escaping (Value, Value) -> Bool) -> SortDescriptor<Key>

Create the specific sortDescriptor by the sorted data and the sorted methods. Parameter: key is a function which returns the real sorted value. Parameter: isAscending is a function which comapre the sorted value. Return: A SortDescriptor function which use key and isAscending.

SortedDescriptor Example

struct Dog {
    var name: String = ""
    var age: Int = 0
}

let dog1 = Dog(name: "laifu", age: 4)
let dog2 = Dog(name: "xiaohu", age: 3)
let dog3 = Dog(name: "dingdang", age: 8)
let dog4 = Dog(name: "laifu", age: 6)
let dog5 = Dog(name: "laifu", age: 9)
let dogs = [dog1, dog2, dog3, dog4, dog5]

let nameSortDescriptor: SortDescriptor<Dog> = SSFSortDescriptor.makeDescriptor(key: {$0.name}, >)
let ageSortDescriptor: SortDescriptor<Dog> = SSFSortDescriptor.makeDescriptor(key: {$0.age}, >)

let newDogs = dogs.sorted(by: nameSortDescriptor |> ageSortDescriptor)
print(newDogs)//[Dog(name: "xiaohu", age: 3), Dog(name: "laifu", age: 9), Dog(name: "laifu", age: 6), Dog(name: "laifu", age: 4), Dog(name: "dingdang", age: 8)]

Contact

• Email:peter1990lynn@gmail.com
• Weibo:@PeterShi

License

SwiftDevUtility is released under the MIT license. See LICENSE for details.