Import Foundation - Swift Programming

An import makes a module's library types and functions available to a Swift file.

Use a library after import

import_foundation.swift

import Foundation

let rawName = 
let trimSet = CharacterSet.whitespacesAndNewlines
let normalized = rawName.trimmingCharacters(in: trimSet)
let words = normalized.split(separator: " ")
let title = words.map { word in
    word.prefix(1).uppercased() + word.dropFirst()
}.joined(separator: " ")

print(title)

import Foundation

let rawName = 
let trimSet = CharacterSet.whitespacesAndNewlines
let normalized = rawName.trimmingCharacters(in: trimSet)
let words = normalized.split(separator: " ")
let title = words.map { word in
    word.prefix(1).uppercased() + word.dropFirst()
}.joined(separator: " ")

print(title)

import Foundation

let rawName = 
let trimSet = CharacterSet.whitespacesAndNewlines
let normalized = rawName.trimmingCharacters(in: trimSet)
let words = normalized.split(separator: " ")
let title = words.map { word in
    word.prefix(1).uppercased() + word.dropFirst()
}.joined(separator: " ")

print(title)

import Swift files use `import` to name the modules they depend on before using the types or helpers provided by those modules.