macshome

import Foundation

extension TimeInterval {
    var seconds: TimeInterval { self }
    var minutes: TimeInterval { self * 60 }
    var hours: TimeInterval { self * 3_600 }
    var days: TimeInterval { self * 86_400 }
    var weeks: TimeInterval { self * 604_800 }
    var months: TimeInterval { self * 2_628_000 }

macshome

//
//  Activity.swift
//
//  Created by Zachary Waldowski on 8/21/16.
//  Copyright © 2016 Zachary Waldowski. Licensed under MIT.
//

import os.activity

private final class LegacyActivityContext {

macshome

import Cocoa
import PlaygroundSupport

PlaygroundPage.current.needsIndefiniteExecution = true

var isScreenLocked: Bool {
    guard let wssProperties = CGSessionCopyCurrentDictionary() as? [String : Any], (wssProperties["CGSSessionScreenIsLocked"] != nil) else {
        return false
    }
    return true

macshome

import Cocoa

// Security Session
//
// You can access bits about the security session to get some basic info. You can only get info about your own session.
// Other than the session id, the values are all Bools.
var sessionID = SecuritySessionId()
var sessionAttrs = SessionAttributeBits()

let result = SessionGetInfo(callerSecuritySession,

macshome

import Foundation
import PlaygroundSupport

PlaygroundPage.current.needsIndefiniteExecution = true

// Simple class to search for things with `NSMetadataQuery`.
class Searcher {
    // This is just for timing things
    let startTime = Date()

macshome

import Cocoa
import CoreServices

// Different ways of finding out about disk space on macOS.

// This method from CoreServices lets you find the space the OS considers "purgable"
// You can trigger a purge as well with `CSDiskSpaceStartRecovery`
let path = URL(fileURLWithPath: "/")
let possibleBytes = CSDiskSpaceGetRecoveryEstimate(path as NSURL)

macshome

import Foundation

// Playground for exploring memory layout in Swift.

// A simple struct
struct Foo {
    let a: Int?
    let b: Int?
    var isTrue = true
}

macshome

import Darwin

func getProcessList() {
    // Requesting the pid of 0 from systcl will return all pids
    var mib = [CTL_KERN, KERN_PROC, KERN_PROC_ALL, 0]
    var bufferSize = 0

    // To find the needed buffer size you call sysctl with a nil results pointer.
    // This sets the size of the buffer needed in the bufferSize pointer.
    if sysctl(&mib, UInt32(mib.count), nil, &bufferSize, nil, 0) < 0 {

macshome

swift-format Default Settings

Since I've not found anywhere that describes the default settings of swift-format other than the code, I've pulled those settings out and presented them here.

Rules that are opt-in are marked as such.

Formating-Only Rules

(Most of these rules are defined in the default config, not the rules folder.)

1. maximumBlankLines = 1
2. lineLength = 100
3. tabWidth = 8

macshome

How to Defang macOS System Protections

If you want to change things on the root drive of a Mac you will need to take some steps to disable the built in security of the system. Most of these steps are the same regardless if you are on Intel or Apple Silicon. If there is a difference it is noted.

Note that all of these things put a Mac into an unsupported and less secure state.

Make sure you either perform these steps in a VM or that you reset the protections after you are done poking around

Protections and Terms

(This list is not exahustive on the details of each. Check the links at the end for more info.)