Introducción a Swift y XCode
Swift y el ecosistema Apple
Instalación y configuración de XCode
Quiz: Introducción a Swift y XCode
Fundamentos de programación iOS
Variables, constantes y tipos de datos básicos
Condicionales
Funciones
Tipos de datos opcionales
Arreglos: append, insert, como crearlas
Arreglos: validar, editar y agregar una lista dentro de otra lista
Conjuntos: como agregar o eliminar elementos
Conjuntos: principales operaciones entre conjuntos
Diccionarios
Recorridos parte 1: while
Recorridos parte 2: for
Recorridos parte 3: los retos
Quiz: Fundamentos de programación iOS
POO en iOS
Programación orientada a objetos en iOS
Structs
Clases y herencia
Enums
Protocolos
Funciones de arreglos (filter, map, reduce)
Funciones de arreglos parte 2 (filter, map, reduce): playground
Quiz: POO en iOS
Manejo de errores y programación segura
Manejo de errores y programación segura
Propagación de errores
Do, try, catch
Quiz: Manejo de errores y programación segura
Programación en el ecosistema de Apple
Siguientes pasos para el desarrollo en iOS
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What are sets and how do they differ from arrays?
Sets, also known as sets, represent a fundamental data structure in programming. At first glance, they may look similar to arrays, since both allow the manipulation of lists, but they have significant differences that make them unique. First, the elements in a set are unordered, which means that they cannot be accessed through specific positions. Second, sets do not allow duplicate elements. This is in contrast to arrays, where you can have multiple instances of the same object.
How to declare a set in Xcode?
Using sets in Xcode programming is straightforward and is accomplished with specific syntax. To declare an array, you can follow these steps:
// Declaration of an empty set of type String var animals: Set<String> = [] // Another way to declare var otherAnimals = Set<String>().In both cases it is essential to specify the data type of the set if it is empty, so that the compiler understands the type of data it will handle.
How to initialize a set with elements?
As with arrays, you can initialize arrays with certain elements from scratch. Here is an example of how to do it:
var animals: Set<String> = ["dog", "cat", "rabbit"]How to manipulate sets: count, add and remove elements?
Just as you would when manipulating an array, you can perform various operations with a set.
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Count elements:
let countAnimals = animals.count
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Add elements: Using the
insertmethod allows you to add new elements to the array.animals.insert("horse")
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Remove elements: You can remove specific elements or completely empty the set:
animals.remove("horse")
animals.removeAll()
In what real-world applications can sets be used?
Thinking about practical situations where sets are useful is essential to understanding their value. For example:
- Imagine an application that lists students enrolled in a subject. It would not make sense to allow duplicates for the same student. Here, a set guarantees that each student is listed only once.
Think of other possible scenarios where the use of sets is applicable, and let me know in the comments.
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