Optional-Extensions

This extesnions allows you to write more readable code and not to use nil coalliasing operator "??" in order to provide default value for a common Swift types.

Examples:

1. String/Array/Set/Dictionary

let someOptionalString: String? = nil

// instead of this 
let someString: String = someOptionalString ?? ""

// we will use this
let someString: String = someOptionalString.orEmpty

2. Int/Double/Float/CGFloat...

let someOptionalNumber: Int? = nil

// instead of this 
let someNumber: Int = someOptionalNumber ?? 0

// we will use this
let someNumber: Int = someOptionalNumber.orZero

3. Date

let someOptinonalDate: Date? = nil

// instead of this 
let someDate: Date = someOptinonalDate ?? Date()

// we will use this
let someDate: Date = someOptinonalDate.orToday

4. Bool

let someOptionalBool: Bool? = nil

// instead of this 
let someBool: Bool = someOptionalBool ?? false

// we will use this
let someBool: Bool = someOptionalBool.orFalse

For optional chaining, it would look like this

let someNumber = (someNonOptionalValue.someOptionalValue?.someNonOptionalNumber).orZero