rjstelling

Fixing Linker Errors in Xcode (___llvm_profile_runtime Missing Symbol)

Encountering a linker error in Xcode can be frustrating, especially when dealing with third-party Swift packages. One common error looks like this:

Undefined symbols for architecture arm64:
  "___llvm_profile_runtime", referenced from:
      ___llvm_profile_runtime_user in PocketSVG.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

rjstelling

How to Create and Use Multiple Apple IDs for iOS Simulator Testing

Creating multiple Apple IDs for testing your app in the iOS Simulator can help isolate user experiences and troubleshoot issues effectively. Follow this easy guide to set up and successfully use multiple Apple IDs.

Step 1: Prepare Unique Apple IDs

Each Apple ID you create must have:

• A unique email address (you cannot reuse emails across Apple IDs).
• Access to a phone number for Two-Factor Authentication (2FA).

rjstelling

{
    "macOS Dynamic System Colors": {
        "Alternate selected control text color": {
            "Use for": "The text on a selected surface in a list or table.",
            "AppKit API": "alternateSelectedControlTextColor"
        },
        "Alternating content background colors": {
            "Use for": "The backgrounds of alternating rows or columns in a list, table, or collection view.",
            "AppKit API": "alternatingContentBackgroundColors"
        },

rjstelling

Lazy Lock Down Curriculum

Rules

1. No adverts
2. Entries should be age approprate (5-16)
3. Be kind

Science

Lockdown Embryology with Prof. Alice Roberts

rjstelling

import UIKit

class BorderButton: UIButton {
  
  private class BorderLayer: CAShapeLayer {
    fileprivate var _borderWidth: CGFloat { UIAccessibility.isBoldTextEnabled ? 2.0 : 1.0 }
    fileprivate var _cornerRadius: CGFloat = 4.0
    
    override var lineWidth: CGFloat { get { _borderWidth } set { } }
    override var fillColor: CGColor? { get { UIColor.clear.cgColor } set { } }

rjstelling

//
//  SemanticVersioning.swift
//  
//
//  Created by Richard Stelling on 28/05/2020.
//

// The MIT License (MIT)
//
// Copyright (c) 2016-17 Richard Stelling (http://twitter.com/rjstelling)

rjstelling

import Foundation

// Typesafe UTI, system APIs are all stringly typed 🙄
public struct UTI: CustomDebugStringConvertible, CustomStringConvertible {
    
    public enum Error: Swift.Error {
        case invalidCharachters
    }
    
    private let rawUTI: String

rjstelling

import Foundation

@propertyWrapper
public struct RegularExpressionValidation {

    private var _verifiedString: String?
    private let _regexPattern: String
    private lazy var _regex: NSRegularExpression? = try? NSRegularExpression(pattern: _regexPattern, options: [.caseInsensitive])
    
    public init(_ regexString: String) {

rjstelling

func print<T: FixedWidthInteger>(asBinary val: T) {
    let bitCount = MemoryLayout<T>.size * 8
    let binaryStr = String(val, radix: 2)
    let zeroPadding = String(repeating: "0", count: bitCount - binaryStr.count)
    print("0b\(zeroPadding)\(binaryStr)")
}

rjstelling

import Foundation

public enum StringSearchError: Swift.Error {
    case didNotFind(Character)
}

extension String {
    
    static let ReducedDigits = "aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ0123456789"
    static let DefaultBase36 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"