Swift: Convert struct to JSON?

Question

I created a struct and want to save it as a JSON-file.

struct Sentence {
    var sentence = \"\"
    var lang = \"\"
}

var s = Sentence()
s.sen         


        

Answer 1

Swift 4 supports the Encodable protocol e.g.

struct Sentence: Encodable {
    var sentence: String?
    var lang: String?
}

let sentence = Sentence(sentence: "Hello world", lang: "en")

Now you can automatically convert your Struct into JSON using a JSONEncoder:

let jsonEncoder = JSONEncoder()
let jsonData = try jsonEncoder.encode(sentence)

Print it out:

let jsonString = String(data: jsonData, encoding: .utf8)
print(jsonString)

{
    "sentence": "Hello world",
    "lang": "en"
}

https://developer.apple.com/documentation/foundation/archives_and_serialization/encoding_and_decoding_custom_types