Daniel Beard daniel-beard

Optics By Example Cheat Sheets

The following are appendices from Optics By Example, a comprehensive guide to optics from beginner to advanced! If you like the content below, there's plenty more where that came from; pick up the book!

Operators
Composition Guide
Substitution Guide
Optical Constarints and Types

Operator Cheat Sheet

Setting Up Xcode Claude Code with Third-Party API Endpoints

This guide explains how to configure Xcode's built-in Claude Code integration to work with third-party API endpoints instead of the official Anthropic API. You need macOS 26.2+ and Xcode 26.3+ for the Claude Code integration.

Step 1: Install Claude Code component in Xcode

You need to first install Xcode's own Claude Code instance, with its own Claude Code binary.

Xcode Settings -> Intelligence -> Anthropic -> Claude Agent -> press Get button

	#!/usr/bin/env xcrun -sdk macosx swift

	// Displays UI in an NSWindow which can interact with the commandline
	// Usage: `echo "Bar" \| ./swift-ui-commandline-tool.swift`

	import Foundation
	import SwiftUI

	extension CommandLine {
	static let input: String = { AnyIterator { readLine() }.joined() }()

	extension RangeReplaceableCollection {
	static func += (collection: inout Self, element: Element) {
	collection.append(element)
	}

	static func += (collection: inout Self, element: Element?) {
	if let element = element {
	collection.append(element)
	}
	}

	import Foundation

	extension Decodable where Self: Encodable {
	/// Creates a new instance and changes the value for the provided key.
	///
	/// - Parameters:
	/// - key: The key path to the property that you want to modify.
	/// Use period to separate levels and [] for indexes.
	/// Examples: "id", "name.firstName", "children[2].name.firstName"
	///

	{
	"hooks": {
	"PostToolUse": [
	{
	"matcher": "Write\|Edit",
	"hooks": [
	{
	"type": "command",
	"command": "~/scripts/doc-generator.sh"
	}