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@swiftui-lab
swiftui-lab / showSizes.swift
Last active October 27, 2024 07:11
A debugging modifier for SwiftUI views (showSizes)
// Author: SwiftUI-Lab (swiftui-lab.com)
// Description: Implementation of the showSizes() debugging modifier
// blog article: https://swiftui-lab.com/layout-protocol-part-2
import SwiftUI
struct MeasureExample: View {
var body: some View {
VStack {
@beet
beet / Dashboard.md
Created April 30, 2022 05:36
Obsidian Templater script to convert the current line to a Tasks plugin task

Today

due today
not done
done today
@fxm90
fxm90 / Combine+Pairwise.swift
Last active February 17, 2024 02:09
Extension for a Combine-Publisher that returns the current and previous value.
//
// Combine+Pairwise.swift
//
// Created by Felix Mau on 17.05.21.
// Copyright © 2021 Felix Mau. All rights reserved.
//
import Combine
extension Publisher {
@tclementdev
tclementdev / libdispatch-efficiency-tips.md
Last active November 15, 2024 01:56
Making efficient use of the libdispatch (GCD)

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

  • You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

  • Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse

@hjbotha
hjbotha / free_ports.sh
Last active November 15, 2024 00:45
Free ports 80 and 443 on Synology NAS
#! /bin/bash
# NEWLY ADDED BACKUP FUNCTIONALITY IS NOT FULLY TESTED YET, USE WITH CARE, ESPECIALLY DELETION
# Developed for DSM 6 - 7.0.1. Not tested on other versions.
# Steps to install
# Save this script in one of your shares
# Edit it according to your requirements
# Backup /usr/syno/share/nginx/ as follows:
# # cd /usr/syno/share/
# # tar cvf ~/nginx.tar nginx
@gokselkoksal
gokselkoksal / Channel.swift
Last active September 16, 2022 03:53
Channel implementation
public class Channel<Value> {
private class Subscription {
weak var object: AnyObject?
private let notifyBlock: (Value) -> Void
private let queue: DispatchQueue
var isValid: Bool {
return object != nil
@MathieuWhite
MathieuWhite / Obfuscator.swift
Created July 3, 2016 13:33
Obfuscator for Swift
//
// Obfuscator.swift
// SwiftObfuscatorExample
//
// Created by Mathieu White on 2016-07-03.
// Copyright © 2016 Mathieu White. All rights reserved.
//
import Foundation
@Ashton-W
Ashton-W / Breakpoints_v2.xcbkptlist
Last active January 25, 2023 09:28
My User Breakpoints_v2.xcbkptlist
<?xml version="1.0" encoding="UTF-8"?>
<Bucket
type = "2"
version = "2.0">
<Breakpoints>
<!-- All Exceptions -->
<BreakpointProxy
BreakpointExtensionID = "Xcode.Breakpoint.ExceptionBreakpoint">
<BreakpointContent
@natecook1000
natecook1000 / NSTimer+Closure.swift
Last active July 12, 2024 05:11
Scheduled NSTimer with a Swift closure
extension NSTimer {
/**
Creates and schedules a one-time `NSTimer` instance.
- Parameters:
- delay: The delay before execution.
- handler: A closure to execute after `delay`.
- Returns: The newly-created `NSTimer` instance.
*/
@austinzheng
austinzheng / main.swift
Last active March 7, 2016 20:41
Anonymous class experiment in Swift
import Foundation
protocol SomeDelegateProtocol : class {
func firstFunc() -> String
func secondFunc() -> Bool
func thirdFunc() -> Self
}
class MyClass {
weak var delegate : SomeDelegateProtocol?