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...tProtocolsAndGenerics.xcodeproj/xcshareddata/xcschemes/swiftProtocolsAndGenerics.xcscheme
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swiftProtocolsAndGenerics/swiftProtocolsAndGenerics/Comparator.swift
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,24 @@ | ||
| // | ||
| // Comparator.swift | ||
| // swiftProtocolsAndGenerics | ||
| // | ||
| // Created by Alberto Irurueta Carro on 14/12/16. | ||
| // Copyright © 2016 Alberto Irurueta Carro. All rights reserved. | ||
| // | ||
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| import Foundation | ||
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| /** | ||
| Protocolo para permitir comparar objetos de tipo T. | ||
| */ | ||
| public protocol Comparator { | ||
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| /** | ||
| Compara dos objetos de tipo T. | ||
| - parameter o1: primer objeto a comparar. | ||
| - parameter o2: segundo objeto a comparar. | ||
| - returns: -1 si o1 es menor que o2, 0 si o1 y o2 son iguales o 1 si o1 | ||
| es mayor que o2. | ||
| */ | ||
| func compare<T>(_ o1: T, _ o2: T) -> Int | ||
| } |
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swiftProtocolsAndGenerics/swiftProtocolsAndGenerics/ComparatorAndAverager.swift
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,23 @@ | ||
| // | ||
| // ComparatorAndAverager.swift | ||
| // swiftProtocolsAndGenerics | ||
| // | ||
| // Created by Alberto Irurueta Carro on 15/12/16. | ||
| // Copyright © 2016 Alberto Irurueta Carro. All rights reserved. | ||
| // | ||
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| import Foundation | ||
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| /** | ||
| Permite comparar objetos y obtener el promedio entre dos objetos de tipo T. | ||
| Este protocolo se utiliza para obtener la mediana en array de longitud par. | ||
| */ | ||
| public protocol ComparatorAndAverager : Comparator { | ||
| /** | ||
| Calcula el promedio de los dos valores proporcionados. | ||
| - parameter o1: primer valor. | ||
| - parameter o2: segundo valor. | ||
| - returns: promedio de los dos valores proporcionados. | ||
| */ | ||
| func average<T>(_ o1: T, _ o2: T) -> T | ||
| } |
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swiftProtocolsAndGenerics/swiftProtocolsAndGenerics/Container.swift
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| // | ||
| // Container.swift | ||
| // swiftProtocolsAndGenerics | ||
| // | ||
| // Created by Alberto Irurueta Carro on 15/12/16. | ||
| // Copyright © 2016 Alberto Irurueta Carro. All rights reserved. | ||
| // | ||
|
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| import Foundation | ||
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| /** | ||
| Contenedor de un objeto cualquiera de tipo T. | ||
| */ | ||
| public class Container<T> { | ||
| /** | ||
| Valor interno almacenado por esta clase. | ||
| */ | ||
| private var _value: T | ||
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| /** | ||
| Constructor. | ||
| - parameter value: valor inicial proporcionado. | ||
| */ | ||
| public init(value: T) { | ||
| _value = value | ||
| } | ||
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| /** | ||
| Obtiene o establece el valor interno de esta clase. | ||
| */ | ||
| public var value: T { | ||
| get{ | ||
| return _value | ||
| } | ||
| set { | ||
| _value = newValue | ||
| } | ||
| } | ||
| } |
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72 changes: 72 additions & 0 deletions
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swiftProtocolsAndGenerics/swiftProtocolsAndGenerics/FoundationSorter.swift
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,72 @@ | ||
| // | ||
| // FoundationSorter.swift | ||
| // swiftProtocolsAndGenerics | ||
| // | ||
| // Created by Alberto Irurueta Carro on 15/12/16. | ||
| // Copyright © 2016 Alberto Irurueta Carro. All rights reserved. | ||
| // | ||
|
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| import Foundation | ||
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| /** | ||
| Ordena array utilizando el algoritmo proporcionado por la Foundation de Swift. | ||
| */ | ||
| public class FoundationSorter : Sorter { | ||
| /** | ||
| Constructor. | ||
| */ | ||
| public override init() { | ||
| super.init() | ||
| } | ||
|
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| /** | ||
| Devuelve el método utilizado para ordenar. | ||
| Esta propiedad debe sobreescribirse en las correspondientes subclases. | ||
| */ | ||
| public override var method: SortingMethod { | ||
| get{ | ||
| return SortingMethod.foundation | ||
| } | ||
| } | ||
|
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| /** | ||
| Ordena el array proporcionado de forma ascendente de modo que: | ||
| array[i - 1] < array[i] para cualquier i válido. | ||
| Este método modifica el array proporcionado de modo que tras la ejecución | ||
| los elementos del array quedan ordenados. | ||
| Esta implementación ordena todo el array de forma completa, por lo | ||
| que los parámetros fromIndex y toIndex se ignoran. | ||
| - parameter array: array a ordenar. Tras la ejecución de este método los | ||
| elementos entre la sposiciones fomIndex (incluído) y toIndex (excluído) | ||
| se modifican de modo que quedan en orden ascendente. | ||
| - parameter fromIndex: posición donde se inicia la ordenación (se ignora). | ||
| - parameter toIndex: posición donde finaliza la ordenación (se ignora). | ||
| - parameter comparator: determina si un elemento es mayor o menor que otro. | ||
| Devuelve -1 si o1 es menor que o2, 0 si o1 es igual a o2 y 1 si o1 es mayor | ||
| que o2. | ||
| - parameter o1: primer elemento a comparar | ||
| - parameter o2: segundo elemento a comparar | ||
| */ | ||
| public override func sort<T>(_ array: inout [T], fromIndex: Int, | ||
| toIndex: Int, | ||
| comparator: (_ o1: T, _ o2: T) -> Int) { | ||
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| array.sort { (o1, o2) -> Bool in | ||
| FoundationSorter.compare(o1, o2, Int.self) | ||
| } | ||
| } | ||
|
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| /** | ||
| Hack para comparar dos objetos cualesquiera sólo si son comparables. | ||
| - returns: true si o1 es mayor que o2, false en caso contrario o si los | ||
| objetos no son Comparables. | ||
| */ | ||
| private static func compare<T: Comparable>(_ o1: Any, _ o2: Any, | ||
| _ type: T.Type) -> Bool{ | ||
| if let c1 = o1 as? T, let c2 = o2 as? T { | ||
| return c1 < c2 | ||
| } else { | ||
| return false | ||
| } | ||
| } | ||
| } |
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