CraigSiemens’s gists

CraigSiemens / View+RefreshableWhileUpdatingState.swift

Created June 13, 2025 15:22

A view modifier that allows `.refreshable` to work reliably alongside state updates that would otherwise cause the refresh task to be cancelled.

	extension View {
	/// A view modifier that allows `.refreshable` to work reliably alongside state updates
	/// that would otherwise cause the refresh task to be cancelled.
	///
	/// In SwiftUI, when a state change triggers a view redraw, any ongoing `.refreshable` task is
	/// cancelled. This can be problematic if your refresh action or scrolling also updates state.
	///
	/// - Important:
	/// `.refreshable` remains the preferred view modifier. Use this modifier only if your view
	/// experiences unexpected task cancellations, as a workaround for this specific issue.

CraigSiemens / pretty-description.swift

Last active April 25, 2023 16:41

Takes a string from the default implementation of `String(describing:)` and reformats it to be on multiple lines with indented properties. Useful when looking at logs or crash reports that generates strings from types using `String(describing:)`.

	#!/usr/bin/swift

	import Darwin
	import Foundation

	var inputString = CommandLine.arguments.dropFirst().joined(separator: " ")
	if inputString.isEmpty {
	while let line = readLine(strippingNewline: false) {
	inputString += line
	}

CraigSiemens / zoom-screenshot.sh

Created March 25, 2023 18:54

Takes a screenshot of each page in the current zoom window.

	#!/bin/bash

	###################################################################################################
	# USAGE
	###################################################################################################
	print_usage() {
	echo -e "Takes screenshots of the pages in the current zoom window"
	echo -e "\nUsage:"
	echo -e " ./zoom-screenshots.sh [-d DELAY_BETWEEN_SCREENSHOTS] [-o OUTPUT_DIR]"
	echo -e "\nFlags (optional):"

CraigSiemens / ArrayBuilder.swift

Last active September 15, 2022 01:55

An simple example of using resultBuilder to create an Array.

	@resultBuilder
	struct ArrayBuilder<Element> {
	static func buildBlock(_ components: [Element]...) -> [Element] {
	components.flatMap { $0 }
	}

	static func buildExpression(_ expression: Element) -> [Element] {
	[expression]
	}

CraigSiemens / AirplaneView.swift

Last active February 18, 2021 09:44

Modified version if AirplaneView that tries to more closely match the behaviour in AutoLayout. https://talk.objc.io/episodes/S01E241-swiftui-layout-challenge-1

	//
	// ContentView.swift
	// Airplane
	//
	// Created by Chris Eidhof on 08.02.21.
	//

	import SwiftUI

	struct ContentView: View {

CraigSiemens / xc.sh

Created June 17, 2020 18:01

Quickly the Xcode workspace, project, or package in the current directory, or specify files to open in Xcode.

	function xc {
	xcodePath=`xcode-select --print-path \| grep ".*\.app" -o`

	if (( $# == 0 ))
	then
	xcworkspace=`ls -1 \| grep *.xcworkspace \| wc -l`
	xcproject=`ls -1 \| grep *.xcodeproj \| wc -l`
	package=`ls -1 \| grep Package.swift \| wc -l`

	if (( $xcworkspace > 0 ))

CraigSiemens / iflet.m

Last active May 2, 2021 02:09 — forked from jspahrsummers/iflet.m

if-let and guard macros for Objective C

	#import <Foundation/Foundation.h>

	// VARIABLE must be a variable declaration (NSString *foo)
	// VALUE is what you are checking is not nil
	// WHERE is an additional BOOL condition

	#define iflet(VARIABLE, VALUE) \
	ifletwhere(VARIABLE, VALUE, YES)

	#define ifletwhere(VARIABLE, VALUE, WHERE) \

CraigSiemens / gist:3821519

Created October 2, 2012 17:41

Pointillize Image

	- (UIImage )pointillizedImageFromImage:(UIImage )image withPointDiameter:(CGFloat)diameter
	{
	CGFloat width = image.size.width;
	CGFloat height = image.size.height;

	CGImageRef inImage = [image CGImage];
	CFDataRef m_dataRef = CGDataProviderCopyData(CGImageGetDataProvider(inImage));
	UInt8* m_pixelBuf = (UInt8*)CFDataGetBytePtr(m_dataRef);

	UIGraphicsBeginImageContextWithOptions(image.size, YES, 0);

Craig Siemens CraigSiemens