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struct MaxHeap<T: Comparable>: CustomStringConvertible {
    
    var heap: [T] = []
    var size: Int {
        return heap.count
    }
    var description: String {
        return "\(heap)"
    }
    

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extension String {
    subscript(idx: Int) -> Character {
        let i = index(startIndex, offsetBy: idx)
        return self[i]
    }

    subscript(range: CountableRange<Int>) -> String {
        let s = index(startIndex, offsetBy: range.lowerBound)
        let e = index(startIndex, offsetBy: range.upperBound)
        return String(self[s..<e])

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git diff origin/master --name-only | grep '\.swift' | xargs -I _path swiftlint --path "./_path"

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#Ruby Programming Language

#Chapter 7 Classes and Modules

Defining a simple class

• Keywords to define class: def, class
• Class constructor can be defined with def initialize example of Point class:

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#Ruby Programming Language

#Chapter 6 Methods, Procs, Lambdas, and Closures

##Defining methods

• to define method use def followed by method name
• put method parameters in round brackets ()
• Abnormal method termination is when method raises exception
• If method terminates normally then last expression evaluated in method body will be method invocation value

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#!/usr/bin/ruby

require 'find'

funcHash = Hash.new
functions = Array.new

files = Array.new
Dir.glob("**/*") { |path|
    swift_file = path if path =~ /.*\.swift$/

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extension UIColor {

    class func random() -> UIColor {

        let randomRed:CGFloat = CGFloat(drand48())
        let randomGreen:CGFloat = CGFloat(drand48())
        let randomBlue:CGFloat = CGFloat(drand48())
        
        return UIColor(red: randomRed, green: randomGreen,
                       blue: randomBlue, alpha: 1.0)

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extension NSURL {
    func query(parameter forKey:String, separator: String) -> String? {
        return query?.components(separatedBy:
            CharacterSet(charactersIn: separator)).first(where: {
                $0.removingPercentEncoding?.hasPrefix(forKey) == true
            })?.replacingOccurrences(of: forKey, with: "")
    }
}

let url = NSURL(string: "https://www.google.pl/?gfe_rd=cr&ei=zjCGWJ33OsTi8Aef1qf4Cg")