carson-katri

extension String {
    func foregroundColor(_ color: UIColor) -> NSAttributedString {
        NSAttributedString(string: self, attributes: [.foregroundColor : color])
    }
    func background(_ color: UIColor) -> NSAttributedString {
        NSAttributedString(string: self, attributes: [.backgroundColor: color])
    }
    func underline(_ color: UIColor, style: NSUnderlineStyle = .single) -> NSAttributedString {
        NSAttributedString(string: self, attributes: [.underlineColor: color, .underlineStyle: style.rawValue])
    }

carson-katri

NSAttributedString {
  "Hello "
    .foregroundColor(.red)
    .font(UIFont.systemFont(ofSize: 10.0))
  "World"
    .foregroundColor(.green)
    .underline(.orange, style: .thick)
}

carson-katri

HStack {
  if greeting != nil {
    Text("\(greeting!) ")
  }
  Text("World")
}

carson-katri

@_functionBuilder
struct AttributedStringBuilder {
  ...
  static func buildIf(_ segment: NSAttributedString?) -> NSAttributedString {
    segment ?? NSAttributedString()
  }
}

carson-katri

{
    "title": "Carson Katri's Blog",
    "subtitle": "Playground Books based on the articles on \"carsonkatri.com\"",
    "publisherName": "Carson Katri",
    "feedIdentifier": "com.carsonkatri.playgrounds",
    "contactURL": "mailto:carson.katri@gmail.com",
    "formatVersion": "1.0",
    "documents": [
        {
            "title": "Make a Function Builder",

carson-katri

struct CardHeading: View {
    @State private var touchZoom: Bool = false
    
    var body: some View {
        VStack(spacing: 0) {
            Image("banner")
                .resizable()
                .aspectRatio(contentMode: ContentMode.fill)
                .frame(minWidth: 0, maxWidth: .infinity, maxHeight: 400)
                .clipped()

carson-katri

Copyright <YEAR> <COPYRIGHT HOLDER>

Permission is hereby granted, free of charge, to any person obtaining a copy of this bad software and associated poor documentation files (the "Bad Software"), to deal in the Bad Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Bad Software, and to permit persons to whom the Bad Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Bad Software.

THE BAD SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES, CODE QUALITY OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

carson-katri

import SwiftUI
import Combine
import PlaygroundSupport

struct SpringSolver {
    let ƛ: CGFloat
    let w0: CGFloat
    let wd: CGFloat
    /// Initial velocity
    let v0: CGFloat

carson-katri

extension View {
    func badge<Badge: View>(_ badge: Badge, alignment: Alignment = .topTrailing) -> some View {
        overlay(
            badge
                .alignmentGuide(.leading, computeValue: splitDimension(\.width))
                .alignmentGuide(HorizontalAlignment.center, computeValue: splitDimension(\.width))
                .alignmentGuide(.trailing, computeValue: splitDimension(\.width))
                .alignmentGuide(.top, computeValue: splitDimension(\.height))
                .alignmentGuide(VerticalAlignment.center, computeValue: splitDimension(\.height))
                .alignmentGuide(.bottom, computeValue: splitDimension(\.height)),

carson-katri

import "mirror" for Mirror, ClassMirror, MethodMirror
import "meta" for Meta

class Wrapper {
    static operators { ["-","!","~","*","/","+","..","...","<<",">>","&","^","|","<","<=",">",">=","is","==","!="] }
    static generate(wrappedType, innerBody) {
        var s = "class %(wrappedType)_ {\n"
        s = s + "  wrappedValue { _wrappedValue }\n"
        s = s + "  construct wrap(wrappedValue) {\n"
        s = s + "    _wrappedValue = wrappedValue\n"