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by: OpenBytes

Posted on:February 23, 2022 at 12:00 PM
Icon representing the OpenBytes o-framework.

What is o?

o is a simple framework to output to a file, url, the console, or even register notification using UserNotifications. o can also get input from a file, url, or console.

Where can o be used?

Currently, o can be used on macOS, iOS, and watchOS.



o.console.out("Value to print: ", terminator: "") //    (oTests/oTests.swift@7) [testExample()]: Value to print:
o.console.out( // Type in "???";         (oTests/oTests.swift@8) [testExample()]: Optional("???")


let fileContents = 4
let folderPath = "./TestFolder"
let filename = "SomeNumber"

try o.file.createDirectory(path: folderPath)

// Write the value 4, an Int, to a file named `filename` in the `folderPath` directory. Files using o.file are base64Encoded by default.
try o.file.out(fileContents, path: folderPath, filename: filename, base64Encoded: false)

// Asserts
XCTAssertEqual(try folderPath, filename: filename), 4)

// Delete the File
try o.file.delete(path: folderPath, filename: filename)

// Assert deletion
XCTAssertThrowsError(try folderPath, filename: filename) as Int)


struct Post: Codable {
    let userId: Int
    let id: Int
    let title: String
    let body: String

// GET Request

let (data, response) = try await o.url.get(
    url: URL(string: "api/posts")!

// POST Request

let post = Post(userId: 1, id: 1, title: "First!", body: "")

let (_, response) = try await
    url: URL(string: "api/posts/\(")!,
    body: try? JSONEncoder().encode(post)



// Request Notification Authorization 

// Set UNUserNotificationCenter.current's delegate to `o.notification.delegate`

// Schedule a Notification
    title: "Hello!",
    subtitle: "o.notification",
    body: "Woo Hoo!",
    trigger: UNTimeIntervalNotificationTrigger(
        timeInterval: 3,
        repeats: false

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