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@niw
niw / fetch_nike_puls_all_activities.bash
Last active November 8, 2025 23:39
A simple NikePlus API description to fetch past run metrics
#!/usr/bin/env bash
# fetch_nike_puls_all_activities.bash
# A simple bash script to fetch all activities and metrics from NikePlus.
# See `nike_plus_api.md` for the API details.
readonly bearer_token="$1"
if [[ -z "$bearer_token" ]]; then
echo "Usage: $0 bearer_token"
exit
@tclementdev
tclementdev / libdispatch-efficiency-tips.md
Last active December 24, 2025 11:02
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

@Amzd
Amzd / UIKitTabView.swift
Last active January 2, 2025 02:53
UIKitTabView. SwiftUI tab bar view that respects navigation stacks when tabs are switched (unlike the TabView implementation)
/// An iOS style TabView that doesn't reset it's childrens navigation stacks when tabs are switched.
public struct UIKitTabView: View {
private var viewControllers: [UIHostingController<AnyView>]
private var selectedIndex: Binding<Int>?
@State private var fallbackSelectedIndex: Int = 0
public init(selectedIndex: Binding<Int>? = nil, @TabBuilder _ views: () -> [Tab]) {
self.viewControllers = views().map {
let host = UIHostingController(rootView: $0.view)
host.tabBarItem = $0.barItem
@Amzd
Amzd / Navigation.swift
Last active July 6, 2023 03:34
Fix the back swipe gesture not working correctly in SwiftUI. https://stackoverflow.com/a/58345554/3393964
/// Fixed swipe gesture NavigationLink
struct NavigationLink<Destination: View, Label:View>: View {
var destination: Destination
var label: () -> Label
public init(destination: Destination, @ViewBuilder label: @escaping () -> Label) {
self.destination = destination
self.label = label
}
@JonnyBeeGod
JonnyBeeGod / CountdownTests.swift
Created December 25, 2019 06:41
This code allows for testing UNNotificationCenter and UNNotificationSettings
func testNotifications() {
// map all authorizationStatus with expected Result
let authorizationStatusMap: [UNAuthorizationStatus: Int] = [.authorized: 1, .denied: 0, .notDetermined: 0, .provisional: 1]
UNNotificationSettings.swizzleAuthorizationStatus()
authorizationStatusMap.forEach { (key: UNAuthorizationStatus, value: Int) in
UNNotificationSettings.fakeAuthorizationStatus = key
let mockCenter = UserNotificationCenterMock()
let mockCoder = MockNSCoder()
@alloy
alloy / build-settings.rb
Created April 28, 2020 14:43
Example of ways to introspect Xcode build settings
# gem install xcodeproj claide hashdiff
require 'xcodeproj'
require 'claide'
require 'pp'
argv = CLAide::ARGV.new(ARGV)
project_path = argv.shift_argument
target_name = argv.option("target")
target_type = argv.option("target-type", "PBXNativeTarget")