December 2015
Intermediate to advanced
400 pages
13h 3m
English
Content preview from Swift Programming: The Big Nerd Ranch Guide
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9 Arrays
An important task in programming is to group together logically related values. For example, imagine your application keeps lists of a user’s friends, favorite books, travel locations, and so on. It is often necessary to be able to keep those values together and pass them around your code. Collections make these operations convenient.
Swift has a number of collection types. The first we will cover is called an Array.
Arrays are an ordered collection of values. Each position in an array is identified by an index, and any value can appear multiple times in an array. Arrays are typically used when the order of the values is important or useful to know, but it is not a prerequisite that the order of the values be meaningful. ...
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