| #!/usr/bin/env python3 | |
| """MCP helper CLI using definitions from config/mcp_servers.json. | |
| This script powers the `pnpm mcp:*` helpers. Typical invocations: | |
| pnpm mcp:list | |
| pnpm mcp:list chrome-devtools --schema | |
| pnpm mcp:call playwright.browser_tabs action=list | |
| pnpm mcp:call chrome-devtools.evaluate_script --args '{"function":"() => document.title"}' | |
| pnpm mcp:call context7.get_library_docs topic=hooks tokens=1500 |
| // To run this code on a Mac with Xcode installed: | |
| // Download the latest toolchain from https://www.swift.org/download/#trunk-development-main and install it | |
| // From a command line: | |
| // export TOOLCHAINS=`plutil -extract CFBundleIdentifier raw -o - /Library/Developer/Toolchains/swift-latest.xctoolchain/Info.plist` | |
| // xcrun swiftc -parse-as-library -enable-experimental-feature NoncopyableGenerics -enable-experimental-feature MoveOnlyPartialConsumption -Xfrontend -disable-round-trip-debug-types -enable-experimental-feature BorrowingSwitch linkedlist.swift | |
| struct Box<Wrapped: ~Copyable>: ~Copyable { | |
| private let pointer: UnsafeMutablePointer<Wrapped> | |
| #!/bin/bash | |
| # Colors | |
| RED='\033[0;31m' | |
| GREEN='\033[0;32m' | |
| NO_COLOR='\033[0m' | |
| BLUE='\033[0;34m' | |
| YELLOW='\033[0;33m' | |
| NO_COLOR='\033[0m' |
| // | |
| // A Swift property wrapper for adding "indirect" to struct properties. | |
| // Enum supports this out of the box, but for some reason struct doesn't. | |
| // | |
| // This is useful when you want to do something recursive with structs like: | |
| // | |
| // struct Node { | |
| // var next: Node? | |
| // } | |
| // |
On Mac, SwiftUI's .onHover closure is not always called on mouse exit, particularly with high cursor velocity. A grid of targets or with finer target shapes will often have multiple targets falsely active after the mouse has moved on.
It is easy to run back to AppKit's safety. Below is a SwiftUI-like modifier for reliable mouse-tracking. You can easily adapt it for other mouse tracking needs.
import SwiftUI
| struct User: Equatable { | |
| var firstName: String | |
| var lastName: String | |
| } | |
| @main | |
| struct MyApp: App { | |
| @State var value = User(firstName: "", lastName: "") | |
| @State var showEdit = false | |
| import Foundation | |
| enum LexingError: Error, Equatable { | |
| case syntaxError(String) | |
| case unexpectedEOF | |
| } | |
| enum ParsingError: Error { | |
| case expected(String) | |
| case unexpectedToken(Token) |
| // Run any SwiftUI view as a Mac app. | |
| import Cocoa | |
| import SwiftUI | |
| NSApplication.shared.run { | |
| VStack { | |
| Text("Hello, World") | |
| .padding() | |
| .background(Capsule().fill(Color.blue)) |
Use these steps to debug components of the Swift toolchain. This allows you to see Swift's source code from the debugger – instead of disassembly. The debugger can also provide some variable names and values. This has been initially tested with libswiftCore.dylib.
These instructions were updated as of Swift 5.2.1.
