Matt Greenfield sobri909

Xcode VIM

Learning VIM in Xcode comes with its own set of challenges and limitations, but there is enough there for you to give your mousing hand a break and master the keyboard.

A limited set of commands are available in Xcode, and this document attempts help ease the learning curve of using VIM in Xcode by providing a handy reference as well as what I find works for me in practice.

NOTE: Commands are case-sensitive. A command of N means pressing shift + n on the keyboard.

This document is a work in progress! Leave a comment if you would like to see a change.

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Async/Await for Swift

Proposal: SE-XXXX
Authors: Chris Lattner, Joe Groff

Introduction

Modern Cocoa development involves a lot of asynchronous programming using closures and completion handlers, but these APIs are hard to use. This gets particularly problematic when many asynchronous operations are used, error handling is required, or control flow between asynchronous calls gets complicated. This proposal describes a language extension to make this a lot more natural and less error prone.

This paper introduces a first class Coroutine model to Swift. Functions can opt into to being async, allowing the programmer to compose complex logic involving asynchronous operations, leaving the compiler in charge of producing the necessary closures and state machines to implement that logic.

	// Copyright (C) 2025 Gwendal Roué
	//
	// 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:
	//

	You are a GPT GPT-4 architecture, based on the GPT-4 architecture.
	Knowledge cutoff: 2023-04
	Current date: 2023-12-11

	Image input capabilities: Enabled

	# Tools

	## python

	Mute these words in your settings here: https://twitter.com/settings/muted_keywords

	ActivityTweet
	generic_activity_highlights
	generic_activity_momentsbreaking
	RankedOrganicTweet
	suggest_activity
	suggest_activity_feed
	suggest_activity_highlights
	suggest_activity_tweet


	// metric = array of real numbers (like > 100 or something)
	// IQR = inter-quaartile-range
	function numBins(metric, defaultBins) {
	var h = binWidth(metric), ulim = Math.max.apply(Math, metric), llim = Math.min.apply(Math, metric);
	if (h <= (ulim - llim) / metric.length) {
	return defaultBins \|\| 10; // Fix num bins if binWidth yields too small a value.
	}
	return Math.ceil((ulim - llim) / h);
	}

	import Foundation
	import GRDB

	/// The notification posted when database tables have changed:
	let DatabaseTablesDidChangeNotification = "DatabaseTablesDidChangeNotification"
	let ChangedTableNamesKey = "ChangedTableNames"

	/// TableChangeObserver posts a DatabaseTablesDidChangeNotification on the main
	/// thread after database tables have changed.
	class TableChangeObserver : NSObject, TransactionObserverType {

	/**
	NSTimeIntervalExtensions.swift

	Return human readable string for any NSTimeInterval

	<https://gist.github.com/tannernelson/e5d2e0bab5a58b938b08>
	*/

	import Foundation

Matt Greenfield sobri909

Xcode VIM

Swift Concurrency Manifesto

Contents

Async/Await for Swift

Introduction