zhangqifan

#if os(iOS)
import CoreImage
import CoreImage.CIFilterBuiltins
import CoreText
import UIKit

/// A single-line UIKit label that transitions text one glyph at a time.
///
/// The intrinsic content size follows the current text. Glyphs are laid out
/// individually from the leading edge, which suits short strings such as

vistar941

import UIKit

final class MenuControl: UIControl {

    private let label: UILabel = {
        let label = UILabel()
        label.text = "Public API-Only Menu"
        label.font = .boldSystemFont(ofSize: 15)
        label.textAlignment = .center
        label.textColor = .white

karpathy

LLM Wiki

A pattern for building personal knowledge bases using LLMs.

This is an idea file, it is designed to be copy pasted to your own LLM Agent (e.g. OpenAI Codex, Claude Code, OpenCode / Pi, or etc.). Its goal is to communicate the high level idea, but your agent will build out the specifics in collaboration with you.

The core idea

Most people's experience with LLMs and documents looks like RAG: you upload a collection of files, the LLM retrieves relevant chunks at query time, and generates an answer. This works, but the LLM is rediscovering knowledge from scratch on every question. There's no accumulation. Ask a subtle question that requires synthesizing five documents, and the LLM has to find and piece together the relevant fragments every time. Nothing is built up. NotebookLM, ChatGPT file uploads, and most RAG systems work this way.

Kyle-Ye

Using CAHostingLayer in SwiftUI

Background

SwiftUI provides more than just UIHostingController / _UIHostingView (iOS) and NSHostingController / NSHostingView (macOS) for embedding SwiftUI views into UIKit/AppKit.

Starting from iOS 18.0 / macOS 15.0, SwiftUI also offers CAHostingLayer<Content: View> — a CALayer subclass that can host SwiftUI content directly at the layer level. This API is currently marked as SPI (@_spi(ForUIKitOnly) / @_spi(ForAppKitOnly)) and is used internally by UIKit, AppKit, and WebKit.

Accessing CAHostingLayer without Apple Internal SDK

stephancasas

//
//  NSAlert+NSTextField.swift
//
//  Created by Stephan Casas for OpenAI on 2/26/26.
//

import Foundation
import AppKit

extension NSAlert {

sebjvidal

import UIKit

extension UIImage {
    static func barButtonImage(title titleText: String, showsBadge: Bool) -> UIImage {
        let badgeView = UIImageView()
        badgeView.image = .badge
        badgeView.isHidden = showsBadge == false
        badgeView.preferredSymbolConfiguration = UIImage.SymbolConfiguration(textStyle: .footnote)
        
        let titleTextLabel = UILabel()

maple3142

POST / HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36
Next-Action: x
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryx8jO2oVc6SWP3Sad
Content-Length: 459

------WebKitFormBoundaryx8jO2oVc6SWP3Sad
Content-Disposition: form-data; name="0"

Archetapp

import SwiftUI

// MARK: - Component

fileprivate struct SplitViewConfig {
    let topDetentRatio: CGFloat
    let bottomDetentRatio: CGFloat
    let elasticThreshold: CGFloat
    let elasticResistance: CGFloat
    let snapThreshold: CGFloat

Archetapp

#include <metal_stdlib>
#include <SwiftUI/SwiftUI.h>
using namespace metal;

float2 distort(float2 uv, float strength) {
    float2 dist = 0.5 - uv;
    uv.x = (uv.x - dist.y * dist.y * dist.x * strength);
    uv.y = (uv.y - dist.x * dist.x * dist.y * strength);
    return uv;

jsmmth

import SwiftUI

struct AnimatedBorder: View {
    @State private var phase: CGFloat = 0
    let cornerRadius: CGFloat = 25
    let dashPattern: [CGFloat] = [15, 15]
    let lineWidth: CGFloat = 4
    
    var body: some View {
        ZStack {