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@wong2
wong2 / claude-code-tools.md
Last active November 26, 2025 04:08
Tools and system prompt of Claude Code

Task

Launch a new agent that has access to the following tools: Bash, Glob, Grep, LS, exit_plan_mode, Read, Edit, MultiEdit, Write, NotebookRead, NotebookEdit, WebFetch, TodoRead, TodoWrite, WebSearch. When you are searching for a keyword or file and are not confident that you will find the right match in the first few tries, use the Agent tool to perform the search for you.

When to use the Agent tool:

  • If you are searching for a keyword like "config" or "logger", or for questions like "which file does X?", the Agent tool is strongly recommended

When NOT to use the Agent tool:

  • If you want to read a specific file path, use the Read or Glob tool instead of the Agent tool, to find the match more quickly
  • If you are searching for a specific class definition like "class Foo", use the Glob tool instead, to find the match more quickly
  • If you are searching for code within a specific file or set of 2-3 files, use the Read tool instead of the Agent tool, to find the match more quickly
@AliSoftware
AliSoftware / Demo.swift
Last active October 31, 2023 12:25
NestableCodingKey: Nice way to define nested coding keys for properties
struct Contact: Decodable, CustomStringConvertible {
var id: String
@NestedKey
var firstname: String
@NestedKey
var lastname: String
@NestedKey
var address: String
enum CodingKeys: String, NestableCodingKey {
import Foundation
extension Character {
var isEmoji: Bool {
return unicodeScalars.allSatisfy { $0.properties.isEmoji }
}
}
func recentlyUsedEmoji() -> [Character]? {
#if os(iOS)
@yougg
yougg / proxy.md
Last active November 17, 2025 18:35
complete ways to set http/socks/ssh proxy environment variables

set http or socks proxy environment variables

# set http proxy
export http_proxy=http://PROXYHOST:PROXYPORT

# set http proxy with user and password
export http_proxy=http://USERNAME:PASSWORD@PROXYHOST:PROXYPORT

# set http proxy with user and password (with special characters)
@bpolania
bpolania / DataExtensions.swift
Last active February 7, 2025 07:01
Swift Extensions for Data, Int, UInt8, UInt16, and UInt32 types
// MIT License
// Copyright (c) 2018 Boris Polania
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
@mdang
mdang / RAILS_CHEATSHEET.md
Last active November 25, 2025 09:17
Ruby on Rails Cheatsheet

Ruby on Rails Cheatsheet

Architecture

Create a new application

Install the Rails gem if you haven't done so before

@sebmarkbage
sebmarkbage / Enhance.js
Last active June 19, 2025 19:41
Higher-order Components
import { Component } from "React";
export var Enhance = ComposedComponent => class extends Component {
constructor() {
this.state = { data: null };
}
componentDidMount() {
this.setState({ data: 'Hello' });
}
render() {
@db0company
db0company / topMostViewController.swift
Created January 19, 2015 14:28
Get the top most viewController anywhere in the app (typically from the appDelegate). Get the current visible viewController.
extension UIViewController {
func topMostViewController() -> UIViewController {
if self.presentedViewController == nil {
return self
}
if let navigation = self.presentedViewController as? UINavigationController {
return navigation.visibleViewController.topMostViewController()
}
if let tab = self.presentedViewController as? UITabBarController {
if let selectedTab = tab.selectedViewController {
@mobilemind
mobilemind / git-tag-delete-local-and-remote.sh
Last active August 10, 2025 11:21
how to delete a git tag locally and remote
# delete local tag '12345'
git tag -d 12345
# delete remote tag '12345' (eg, GitHub version too)
git push origin :refs/tags/12345
# alternative approach
git push --delete origin tagName
git tag -d tagName
@mattt
mattt / uiappearance-selector.md
Last active October 7, 2025 13:32
A list of methods and properties conforming to `UIAppearance` as of iOS 12 Beta 3

Generate the list yourself:

$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep UI_APPEARANCE_SELECTOR ./*     | \
  sed 's/NS_AVAILABLE_IOS(.*)//g'     | \
  sed 's/NS_DEPRECATED_IOS(.*)//g'    | \
  sed 's/API_AVAILABLE(.*)//g'        | \
  sed 's/API_UNAVAILABLE(.*)//g'      | \
 sed 's/UI_APPEARANCE_SELECTOR//g' | \