Robb. Knight.

Strings

Interpolation

let name = "Robb"
let myString = "My name is \(name)"

Replacement

str.replacingOccurrences(of: "this", with: "that")

Split

myString.components(separatedBy: " ")

Includes

let myString = "something cool"
// starts with
myString.starts(with: "something")

// contains
myString.contains("something")

// get first or last
myString.prefix(2) // "so"
myString.suffix(2) // "ol"

Arrays

Join

myArray.joined(separator: ", ")

Filter

let filtered = myArray.filter { $0.count > 1 }

Iterate

for element in elements {
    print(element)
}

// or

elements.forEach { element in
    print(element)
}

Index Exists

myArray.indices.contains(1)

Length of Array

myArray.count

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