mayoff

#import <UIKit/UIKit.h>
#import <ImageIO/ImageIO.h>
#import <MobileCoreServices/MobileCoreServices.h>

static UIImage *frameImage(CGSize size, CGFloat radians) {
    UIGraphicsBeginImageContextWithOptions(size, YES, 1); {
        [[UIColor whiteColor] setFill];
        UIRectFill(CGRectInfinite);
        CGContextRef gc = UIGraphicsGetCurrentContext();
        CGContextTranslateCTM(gc, size.width / 2, size.height / 2);

mayoff

// https://adventofcode.com/2024/day/17

import AOC
import Preamble

let input = readInput()
let chunks = input.split(on: "\n\n")

var debug = false

mayoff

• http://courses.cms.caltech.edu/cs179/
• http://www.amd.com/Documents/GCN_Architecture_whitepaper.pdf
• https://community.arm.com/graphics/b/blog
• http://cdn.imgtec.com/sdk-documentation/PowerVR+Hardware.Architecture+Overview+for+Developers.pdf
• http://cdn.imgtec.com/sdk-documentation/PowerVR+Series5.Architecture+Guide+for+Developers.pdf
• https://www.imgtec.com/blog/a-look-at-the-powervr-graphics-architecture-tile-based-rendering/
• https://www.imgtec.com/blog/the-dr-in-tbdr-deferred-rendering-in-rogue/
• http://developer.amd.com/tools-and-sdks/opencl-zone/amd-accelerated-parallel-processing-app-sdk/opencl-optimization-guide/#50401334_pgfId-412605
• https://fgiesen.wordpress.com/2011/07/09/a-trip-through-the-graphics-pipeline-2011-index/
• https://community.arm.com/graphics/b/documents/posts/moving-mobile-graphics#siggraph2015

mayoff

import SwiftUI

fileprivate struct WidthPreferenceKey: PreferenceKey {
    static var defaultValue: [AnyHashable: CGFloat] { [:] }

    static func reduce(value: inout [AnyHashable : CGFloat], nextValue: () -> [AnyHashable : CGFloat]) {
        value.merge(nextValue(), uniquingKeysWith: { max($0, $1) })
    }
}

mayoff

import UIKit

class FloatingButtonController: UIViewController {

    private(set) var button: UIButton!

    required init?(coder aDecoder: NSCoder) {
        fatalError()
    }

mayoff

(* To the extent possible under law, Rob Mayoff has waived all copyright and related or neighboring rights to “AppleScript to make Google Chrome open/reload a URL”. This work is published from: United States. https://creativecommons.org/publicdomain/zero/1.0/ *)
tell application "Google Chrome"
	activate
	set theUrl to "http://tycho.usno.navy.mil/cgi-bin/timer.pl"
	
	if (count every window) = 0 then
		make new window
	end if
	
	set found to false

mayoff

import Cocoa
import MetalKit

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate, MTKViewDelegate {
    weak var window: NSWindow!
    weak var metalView: MTKView!
    let device = MTLCreateSystemDefaultDevice()!
    var commandQueue: MTLCommandQueue!
    var pipelineState: MTLRenderPipelineState!

mayoff

The attached lldb command pblock command lets you peek inside an Objective-C block. It tries to tell you where to find the source code for the block, and the values captured by the block when it was created.

Consider this example program:

#import <Foundation/Foundation.h>

@interface Foo: NSObject
@end

@implementation Foo

mayoff

#import <UIKit/UIKit.h>

@interface UIBezierPath (forEachElement)

- (void)forEachElement:(void (^)(CGPathElement const *element))block;

@end

mayoff

import SwiftUI

extension UnitPoint {
    /// - returns: The point on the perimeter of the unit square that is at angle `angle` relative to the center of the unit square.
    init(_ angle: Angle) {
        // Inspired by https://math.stackexchange.com/a/4041510/399217
        // Also see https://www.desmos.com/calculator/k13553cbgk

        let s = sin(angle.radians)
        let c = cos(angle.radians)