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• tvOS #23 by @NachoSoto
• Keep up to date with the Xcode Betas

TypeMismatch NSNull

• Fixed ignoredInvalidObjects typo in Array extension
• Marked the T? returning overloads as throwing. However they will catch a NSNull TypeMismatch error.
• Made catchNull and catchAll functions public
• Added completely non-throwing =>?overload returning T?
• Made improvements on how the error path is calculated in nested objects (try and preserve it from the very root object)
• Various minor changes

Simplicity

• Use \u{0}-separated string for JSONPaths. This reduces the number of overloads needed. In the future this will make it easier to test and add new overloads with more return-types like T, T?, [T]...

let a = json => "key1" => "key2" => "key3" // is equivlent to
let a = json => "key1\u{0}key2\u{0}key3"
// NOTE: Never actually do this, the character or implementation details might change.

• Removed DecodableArray<T> and NilFilteringArray<T>. Use either:

[T].decode(object, ignoreInvalidObject: false)
// or 
decodeArray(ignoreInvalidObjects: false)(json: object)

• Added public parse()-function. This is what all the =>-overloads are calling.

public func parse<T>(json: AnyObject, path: [String], decode: (AnyObject throws -> T)) throws -> T {

NSDictionary

• Favor use of NSDictionary instead of [String: AnyObject] to avoid performance issues caused by converting between the two.

This is madness

• Error Paths!
• More complicated implementation
• Possible to have [String: Castable] or [String: AnyObject] as final return type.
• Right associativity (implementation detail, should not affect the basic use-cases)

// j => ("a" => ("b" => "c"))

Power of throws

• Simple and straightforward first implementation
• String, Int, Double, Bool, Dictionary
• T, T?, [T], [T]?
• Left associativity

// ((j => "a") => "b") => "c"