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Code Quality Rank: L5
Programming language: Swift
Tags: Utility    
Latest version: v0.1.0

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README

__.swift

Now, _.swift is version 0.2.0! With the chain of methods, _.swift became more flexible and extensible.

Documentation: http://lotz84.github.io/__.swift/v0.1/ (Updates coming soon..)

_.swift aims to be an utility belt for a new programming language by Apple Inc., Swift. And we decided _.swift to be a clone of Underscore.js, which is an utility belt for JavaScript.

__.swift is a type-safe library because it uses type inference and generics. Therefore, you can write a program without most of the downcasting such as "as" or "as?".

Philosophy

  • Type safe
  • Flexible and Extensible
  • Do not reinvent the wheel
  • A port of Underscore.js to Swift

Installation

If you use __ from swift file, copy __.swift folder into your project. That's all.

Examples

__.map([11,22,33]) { x in x * x }
// [121, 484, 1089]

__.reduce(["H", "e", "l", "l", "o", " ", "S", "w", "i", "f", "t", " ", "!", "!"], "", + )
// Hello Swift !!

func isPrime(n: Int) -> Bool {
  if n < 2 { return false }
  let max = Int(sqrt(Double(n)))
  for i in 2...max {
    if n % i == 0 { return false }
  }
  return true
}

__.find([1,33,173,46], isPrime)
// 173

__.filter(Array(2..100) , isPrime)
// [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97]

let data = [
  ["plan": "walking", "time": "8 a.m."],
  ["plan": "work",    "time": "10 a.m."],
  ["plan": "lunch",   "time": "12 a.m."]
]
__.pluck(data, "plan")
// [walking, work, lunch]

let data2: Array<Dictionary<String, String>> = [
  ["species": "spider", "legs": "8"],
  ["species": "ant", "legs": "6"],
  ["species": "cat", "legs": "4"]
]

// Chain Example

__.chain(data).pluck("legs")?.map({(s:String) -> Int in s.toInt()! })?.sortBy(__.identity)?.value()
// [4, 6, 8]

Alternatives

  • pNre/ExSwift - JavaScript (Lo-Dash, Underscore) & Ruby inspired set of Swift extensions for standard types and classes.
  • RuiAAPeres/Swift-Sugar - Swift's Sugar. Heavily inspired on Objc Sugar
  • ankurp/Dollar.swift - A functional tool-belt for Swift Language similar to Lo-Dash or Underscore in Javascript
  • maxpow4h/swiftz - Functional programming in Swift

Contribution

Feel free to send a PR or create a new issue.

License

MIT Licence


*Note that all licence references and agreements mentioned in the __ README section above are relevant to that project's source code only.