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@Ben-G
Ben-G / DynamicInit.swift
Last active May 5, 2025 13:33
Dynamically create instance based on type in Swift
protocol Initializable {
init()
}
class A : Initializable {
var content:String
required init() {
content = "TestContent"
}
@AliSoftware
AliSoftware / struct_vs_inheritance.swift
Last active March 5, 2025 06:57
Swift, Struct & Inheritance: How to balance the will of using Struct & Value Types and the need for Inheritance?
// #!Swift-1.1
import Foundation
// MARK: - (1) classes
// Solution 1:
// - Use classes instead of struct
// Issue: Violate the concept of moving model to the value layer
// http://realm.io/news/andy-matuschak-controlling-complexity/
@robnadin
robnadin / DetailViewController.swift
Created February 16, 2015 00:47
Animated navigation bar tint color on push and interactive pop
//
// DetailViewController.swift
// TransitionCoordinator
//
// Created by Rob Nadin on 15/02/2015.
// Copyright (c) 2015 Rob Nadin. All rights reserved.
//
import UIKit
extension UIImage {
public func imageRotatedByDegrees(degrees: CGFloat) -> UIImage {
let radiansToDegrees: (CGFloat) -> CGFloat = {
return $0 * (180.0 / CGFloat(M_PI))
}
let degreesToRadians: (CGFloat) -> CGFloat = {
return $0 / (180.0 * CGFloat(M_PI))
}
// calculate the size of the rotated view's containing box for our drawing space
@brandonscript
brandonscript / UIImage-imageRotatedByDegrees.m
Created November 15, 2014 17:52
UIImage image rotated by degrees
// Requires macros:
#define RADIANS_TO_DEGREES(radians) ((radians) * (180.0 / M_PI))
#define DEGREES_TO_RADIANS(angle) (angle / 180.0 * M_PI)
- (UIImage *)imageRotatedByDegrees:(CGFloat)degrees
{
// calculate the size of the rotated view's containing box for our drawing space
UIView *rotatedViewBox = [[UIView alloc] initWithFrame:CGRectMake(0,0,self.size.width, self.size.height)];
CGAffineTransform t = CGAffineTransformMakeRotation(DEGREES_TO_RADIANS(degrees));
@ZevEisenberg
ZevEisenberg / resetAllSimulators.sh
Last active December 23, 2024 19:57
Reset all iOS simulators with this one weird trick
osascript -e 'tell application "iOS Simulator" to quit'
osascript -e 'tell application "Simulator" to quit'
xcrun simctl erase all
@nicklockwood
nicklockwood / Hacking UIView Animation Blocks.md
Last active August 24, 2024 17:08
This article was originally written for objc.io issue 12, but didn't make the cut. It was intended to be read in the context of the other articles, so if you aren't familiar with concepts such as CALayer property animations and the role of actionForKey:, read the articles in that issue first.

Hacking UIView animation blocks for fun and profit

In this article, I'm going to explore a way that we can create views that implement custom Core Animation property animations in a natural way.

As we know, layers in iOS come in two flavours: Backing layers and hosted layers. The only difference between them is that the view acts as the layer delegate for its backing layer, but not for any hosted sublayers.

In order to implement the UIView transactional animation blocks, UIView disables all animations by default and then re-enables them individually as required. It does this using the actionForLayer:forKey: method.

Somewhat strangely, UIView doesn't enable animations for every property that CALayer does by default. A notable example is the layer.contents property, which is animatable by default for a hosted layer, but cannot be animated using a UIView animation block.

@nicktoumpelis
nicktoumpelis / repo-rinse.sh
Created April 23, 2014 13:00
Cleans and resets a git repo and its submodules
git clean -xfd
git submodule foreach --recursive git clean -xfd
git reset --hard
git submodule foreach --recursive git reset --hard
git submodule update --init --recursive
- (void)setupCamera
{
self.coreImageContext = [CIContext contextWithOptions:nil];
// session
self.cameraSession = [[AVCaptureSession alloc] init];
[self.cameraSession setSessionPreset:AVCaptureSessionPresetPhoto];
[self.cameraSession commitConfiguration];
// input
@carlosefonseca
carlosefonseca / sqlite2csv.sh
Created January 9, 2014 13:44
Exports all tables in a sqlite database to CSV.
#!/usr/bin/env bash
# obtains all data tables from database
TS=`sqlite3 $1 "SELECT tbl_name FROM sqlite_master WHERE type='table' and tbl_name not like 'sqlite_%';"`
# exports each table to csv
for T in $TS; do
sqlite3 $1 <<!
.headers on