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1. JSON TO SWIFT CONVERTER HOW TO
2. JSON TO SWIFT CONVERTER UPDATE
3. JSON TO SWIFT CONVERTER DOWNLOAD
4. JSON TO SWIFT CONVERTER MAC

But for strongly-typed languages like Swift, this simplicity could lead to suboptimal parsing strategies. JSON's popularity lies in its simplicity: it supports only a handful of data types, like strings, numerics, Booleans, arrays, and dictionaries, and is generally easy for humans to read.

JSON TO SWIFT CONVERTER HOW TO

You’re still likely to encounter property lists though, so it can be handy to know how to deal with them.If you've done any Web, mobile, or desktop programming in the past decade (and would you even be here if you hadn't?), you've used JSON-the lingua franca for serializing data across devices and platforms. With JSONEncoder you can easily convert Codable data structures to Data and keep them as JSON. If you’re working in Swift, as most iOS developers seem to be today, it’s a fair question of why you’d convert from JSON to a property list. With the built-in conversions though, the framework almost certainly has you covered. If you’re converting from a property list to JSON, it used to be that dates and binary data could require a bunch of extra work. The same conversions are available in the other direction. Other converters are available for binary data and the “non conforming” floating point values mentioned above. It’s almost the same, but now the value is a element instead of a. Using the JSON from above, you might define this structure:

So both formats handle the missing value as expected even though they have different ideas about nil/null values. The property list leaves that property out. A JSON null ends up as a nil value for one of your struct properties. If you declare a type for your data– a struct or whatever– instead of using a dictionary directly, you can bypass the problem by using JSONDecoder to parse the JSON, followed by using PropertyListEncoder to create the property list. Swift gives us a different approach, thanks to Codable. Neither version is valid property list data, so the handy write(toFile:, atomically:) function will fail. If you’re aiming for a property list though, it doesn’t matter which you use. That’s not nil, so it’s OK for a structure that can’t contain nil values. If you unwrap it, you’ll get our old friend NSNull. This time the type of json is Optional.Type. This doesn’t allow optionals, but the conversion still works. Let json = try? JSONSerialization.jsonObject(with: jsonData, options: ) as? Whether that’s what you get depends on whether you allow nil entries, that is, whether your dictionary is able to hold optional values. That’s something Swift dictionaries allow but Objective-C does not. Depending on your code, a JSON null might be represented by a doubly-wrapped nil value in the resulting dictionary. If you’re using Swift, then JSONSerialization includes a slight change in behavior, related to differences in how Swift dictionaries work compared to Objective-C. Go see my previous post if you’re having trouble converting to or from a property list. If you’re using Objective-C, NSJSONSerialization hasn’t changed. I’m hoping that this post can help smooth out the bumps when converting is needed.

JSON TO SWIFT CONVERTER MAC

But property lists are still ubiquitous in iOS and Mac development, so conversion still happens sometimes. It’s reasonable to keep JSON data as JSON. JSON support has drastically improved, as I’ll discuss below. Why convert JSON to a property list? It’s a good question, and more relevant now than when I wrote the original post. None of these can exist in JSON without converting the data somehow, only Foundation didn’t provide any built-in conversions.

JSON TO SWIFT CONVERTER DOWNLOAD

The previous post was motivated by the problems some people encountered trying to download JSON from a server and then save it as a property list.

JSON TO SWIFT CONVERTER UPDATE

But Swift changes the situation in some ways, so an update is in order. That was a while ago but the post is still accurate, as far as it goes. In a previous post I wrote about How JSON compares to Apple property lists and the obstacles to converting data between them.