tkersey

2024

April

• Joining and managing a shared activity

  Configure the session when a SharePlay activity starts, and handle events that occur during the lifetime of the activity.

  When one person in a group starts an activity, other people’s devices display system UI to prompt them to join that activity. When each person joins, the system prepares a GroupSession object for the activity and delivers it to their app. Your app uses that session object to:

  • Prepare any required UI.
  • Start the activity, monitor its state, and respond to changes.
  • Synchronize activity-related information. >

tkersey

import Combine
import Foundation
import os

@MainActor public final class PollingDataModel<DataModels: Sendable> {
    private let logger = Logger(subsystem: "Polling", category: "PollingDataModel")

    private var pollingTask: Task<Void, Never>?
    private var currentlyPolling = false

tkersey

import Foundation

extension Task {
	static func sleep(until target: Date) async throws where Success == Never, Failure == Never {
		let duration = target.timeIntervalSinceNow
		try await Self.sleep(for: .seconds(duration))
	}
}

print("Waiting for 1s...")

tkersey

struct ReducedReplayAsyncStream<Element> {

    typealias Reduce = (_ partialResult: inout Element, _ nextResult: Element) -> Void

    private let storage: _Storage
    private var originalStream: AsyncStream<Element>

    init(
        bufferingPolicy limit: AsyncStream<Element>.Continuation.BufferingPolicy = .unbounded,
        initialResult: Element,

tkersey

extension Optional {
    func map<T>(
        transform: (Wrapped) async throws -> T
    ) async rethrows -> T? {
        guard case let .some(value) = self else { return nil }
        return try await transform(value)
    }
}

tkersey

Remove file from git repository (history)

SOLUTION: This is the shortest way to get rid of the files:

1. check .git/packed-refs - my problem was that I had there a refs/remotes/origin/master line for a remote repository, delete it, otherwise git won't remove those files

2. (optional) git verify-pack -v .git/objects/pack/#{pack-name}.idx | sort -k 3 -n | tail -5 - to check for the largest files

3. (optional) git rev-list --objects --all | grep #{SHA_FROM_#_3} - to check what files those are

tkersey

iOS Memory Deep Dive

• vmmap --summary X.memgraph
• vmmap X.memgraph | rg "MEMORY REGION NAME"
• vmmap --verbose X.memgraph | rg "MEMORYREGION"
• leaks --traceTree 0xSTARTINGMEMORYADDRESS
• malloc_history X.memgraph --fullStacks 0xSTARTINGMEMORYADRESS
• Other helpful commands
  • vmmap --pages X.memgraph
  • leaks X.memgraph
• heap X.memgraph

tkersey

#!/bin/sh

# Runs SwiftFormat on changed Swift files in the project.
# The re-formatting may not be caught at commit time, though, and so may require a subsequent commit/amending.

# If any command fails, exit immediately with that command's exit status.
# shellcheck disable=SC3040
set -eo pipefail

# Redirect output to stderr.

tkersey

-- Yoneda --------------------------------------------------------------
newtype Yoneda f a = Yoneda { runYoneda :: forall b. ((a -> b) -> f b) } 

instance Functor (Yoneda f) where
  fmap f y = Yoneda (\ab -> runYoneda y (ab . f))
  
toYoneda :: Functor f => f a -> Yoneda f a
toYoneda fa = Yoneda (\f -> fmap f fa)

fromYoneda :: Yoneda f a -> f a

tkersey

found at: http://fascinated.fm/post/2379188731/getting-a-motorola-sbg6580-into-bridge-mode-on

Getting a Motorola SBG6580 into “Bridge” mode on TimeWarner Wideband

1. Unplug coax cable from Motorola
2. Hold down the white reset button on the back panel with a pen for 30s.  This resets all settings to factory defaults. The modem will be auto-reconfigured once you plug in the coax cable.
3. When modem is back on plug in a computer with an Ethernet cable into the modem.
4. Connect to http://192.168.0.1 and login with “admin” / “motorola”
5. Now you will make some changes:
 

• Wireless -> Primary Network -> Disabled