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Dmitry Nesterenko nesterenkodm

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@steipete
steipete / UIView+PSPDFKitAdditions.h
Last active August 26, 2022 09:00
Simple solution that allows to block the parent layoutSubview-triggering, see https://gist.github.com/steipete/9723421. In short, changing a frame of a subview outside of layoutSubviews will trigger the parent's layoutSubviews. Sometimes this is not what we want, especially when you consider performance. In my case (http://pspdfkit.com) this was…
@interface UIView (PSPDFKitAdditions)
// Allows to change frame/bounds without triggering `layoutSubviews` on the parent.
// Not needed for changes that are performed within `layoutSubviews`.
- (void)pspdf_performWithoutTriggeringSetNeedsLayout:(dispatch_block_t)block;
@end
#import "UIView+PSPDFKitAdditions.h"
@steipete
steipete / ios-xcode-device-support.sh
Last active October 14, 2024 16:35
Using iOS 15 devices with Xcode 12.5 (instead of Xcode 13)
# The trick is to link the DeviceSupport folder from the beta to the stable version.
# sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)
# Support iOS 15 devices (Xcode 13.0) with Xcode 12.5:
sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/15.0 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport
# Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions
# (A similar approach works for older versions too, just change the version number after DeviceSupport)
@smileyborg
smileyborg / InteractiveTransitionCollectionViewDeselection.m
Last active November 3, 2024 16:25
Animate table & collection view deselection alongside interactive transition (for iOS 11 and later)
// UICollectionView Objective-C example
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
NSIndexPath *selectedIndexPath = [[self.collectionView indexPathsForSelectedItems] firstObject];
if (selectedIndexPath != nil) {
id<UIViewControllerTransitionCoordinator> coordinator = self.transitionCoordinator;
if (coordinator != nil) {
[coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> context) {
@tclementdev
tclementdev / libdispatch-efficiency-tips.md
Last active April 10, 2025 19:06
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

@jankais3r
jankais3r / iOS 13 Entitlements
Created May 1, 2020 12:46
iOS 13 Entitlements
//Sourced from http://newosxbook.com/ent.jl?ent=&osVer=iOS13
abs-client
absinthe-client
adi-client
allow-obliterate-device
allow-softwareupdated
appData
application-identifier
aps-connection-initiate
aps-environment
@steipete
steipete / OSLogStream.swift
Last active December 21, 2024 15:11
Access streaming OSLogStore at runtime with SPI. (FB8519418) https://steipete.com/posts/logging-in-swift/
//
// OSLogStream.swift
// LoggingTest
//
// Created by Peter Steinberger on 24.08.20.
//
// Requires importing https://github.com/apple/llvm-project/blob/apple/master/lldb/tools/debugserver/source/MacOSX/DarwinLog/ActivityStreamSPI.h via bridging header
import Foundation
@krzyzanowskim
krzyzanowskim / .gitconfig
Last active February 4, 2025 21:45
commit-ai
[alias]
# need llm CLI: https://llm.datasette.io/en/stable/
# based on https://gist.github.com/karpathy/1dd0294ef9567971c1e4348a90d69285?permalink_comment_id=5167582#gistcomment-5167582
commit-ai = "!f() { if [ -n \"$(git diff --cached)\" ]; then git commit -m \"$(git diff --cached | llm -m '4o-mini' 'Below is a diff of all staged changes, coming from the command:\\n```\\ngit diff --cached\\n```\\nPlease generate a concise, two-sentence, maximum 100 characteres commit message for these changes. Do not mention project name.')\"; else echo 'No changes to commit'; fi }; f"