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In Swift, the most Swift-like approach to convert a string to a boolean would be to use the built-in Bool initializer that takes a String as an argument:

let stringValue = "true"
let booleanValue = Bool(stringValue) ?? false

This will attempt to convert the string value to a boolean, and if it fails, it will return a default value of false. The ?? operator is used to provide a default value in case the initializer returns nil.