Printing valid JSON with a Swift script

Question

I am attempting to print out in the command line the contents of a variable that holds a JSON object, like in the code:

#! /usr/bin/swift
import Glibc
import Foundation

let albert_op = ProcessInfo.processInfo.environment["ALBERT_OP"]!


if albert_op == "METADATA" {
    let metadata = [
        ["iid": "org.albert.extension.external/v2.0",
        "name": "Tomboy",
        "version": "0.1",
        "author": "Will Timpson",
        "dependencies": ["tomboy", "python-pydbus"],
        "trigger": "tb "]
    ]
    print(metadata))
}


exit(0)

However, that prints out:

[["trigger": "tb ", "name": "Tomboy", "iid": "org.albert.extension.external/v2.0", "dependencies": ["tomboy", "python-pydbus"], "version": "0.1", "author": "Will Timpson"]]

Which is not valid, I was expecting something like:

{"version": "0.1", "author": "Will Timpson", "iid": "org.albert.extension.external/v2.0", "trigger": "tb ", "dependencies": ["tomboy", "python-pydbus"], "name": "Tomboy"}

• How to achieve the proper result?

Answer 1

Swift 4:

If you want a quick dirty one liner just for example, checking the serialised JSON Data you are about to attach to a http request body then I use the following:

let json = NSString(data: myJsonObject, encoding: String.Encoding.utf8.rawValue)
print(json)

It prints as clear JSON, no added slashes or anything!