theoknock

// This is similar to using callback blocks with three key differences:
// 1. Blocks stored in an array retain their arguments outside of the context in whicn they were created
// 2. Blocks can be called in combination or in a variance of succession
// 3. The number of blocks to be executed is known up-front

// The same effect could be achieved via regular callback blocks; however, the argument values would not be persistent

typedef int(^BlockObject)(void);

- (void)test {

theoknock

#include "GlobalQueue.h"

dispatch_queue_t queue;

dispatch_queue_t queue_ref(void) {
    if (!queue) {
        queue = dispatch_queue_create_with_target("GlobalDispatchQueue", DISPATCH_QUEUE_SERIAL, dispatch_get_main_queue());
    }
    
    return queue;

theoknock

#import "ViewController.h"

@interface ViewController ()

@property (nonatomic) int a;
@property (nonatomic) int b;
@property (nonatomic) int c;
@property (nonatomic) int d;
@property (nonatomic) int e;

theoknock

//
//  ViewController.m
//  TargetActionCustomPayloadsDemo
//
//  Created by James Alan Bush on 9/18/21.
//

#import "ViewController.h"

@interface ViewController ()

theoknock

- (NSArray<UICollectionViewLayoutAttributes *> *)layoutAttributesForElementsInRect:(CGRect)rect {    
    __autoreleasing NSArray<UICollectionViewLayoutAttributes *> * collectionViewLayoutAttributes;
    [self performSelector:@selector(changeLayoutAttributes:) withObject:[collectionViewLayoutAttributes = [[NSArray alloc] initWithArray:[super layoutAttributesForElementsInRect:rect] copyItems:TRUE] self]];
    
    return (NSArray<UICollectionViewLayoutAttributes *> *)collectionViewLayoutAttributes;
}

- (void)changeLayoutAttributes:(NSArray<UICollectionViewLayoutAttributes *> *)layoutAttributes {
    for (UICollectionViewLayoutAttributes * attribute in layoutAttributes) {
      // change attribute code

theoknock

- (NSArray<__kindof UICollectionViewLayoutAttributes *> *)layoutAttributesForElementsInRect:(CGRect)rect {
    __autoreleasing NSArray<UICollectionViewLayoutAttributes *> * collectionViewLayoutAttributes;
    [[collectionViewLayoutAttributes = [[NSArray alloc] initWithArray:[super layoutAttributesForElementsInRect:rect] copyItems:TRUE] self] enumerateObjectsUsingBlock:^ (UICollectionViewLayoutAttributes * selected_attributes) {
        return ^(UICollectionViewLayoutAttributes * _Nonnull attributes, NSUInteger idx, BOOL * _Nonnull stop) {
            // Configure each attributes object in the collection individually 
            // based on the configuration of a single attributes object in that same collection
        };
    }(^ UICollectionViewLayoutAttributes * (NSArray<NSIndexPath *> * visible_index_paths) {
        UICollectionViewLayoutAttributes * selectedAttributes = nil;
        for (NSIndexPath * indexPath in visible_index_paths) {

theoknock

typedef struct __attribute__((objc_boxable)) ArcDegreesMeasurements ArcDegreesMeasurements;
typedef NSUInteger (^(^ArcDegreesMeasurementsEnd)(void))(void);
struct __attribute__((objc_boxable)) ArcDegreesMeasurements
{
    NSUInteger start;
    NSUInteger length;
    __unsafe_unretained ArcDegreesMeasurementsEnd end;
    NSUInteger sectors;
} arcDegreesMeasurements = {
    .start = 0,

theoknock

- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
  ^ (UITouch * touch) {
    CGPoint center = CGPointMake(CGRectGetMaxX(rect), CGRectGetMaxY(rect));
    CGPoint tp = [touch preciseLocationInView:touch.view];
    CGFloat radius = sqrt(pow(tp.x - center.x, 2.0) + pow(tp.y - center.y, 2.0));
    UIBezierPath * bezier_quad_curve = [UIBezierPath bezierPathWithArcCenter:center
                                        radius:radius
                                        startAngle:degreesToRadians(270.0) 
                                        endAngle:degreesToRadians(180.0)
                                        clockwise:FALSE];

theoknock

void (^eventHandlerBlock)(void) = ^{
  printf("\nHandling event for button %lu\n", some_local_variable);
};
objc_setAssociatedObject(button, @selector(invoke), eventHandlerBlock, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
[button addTarget:eventHandlerBlock action:@selector(invoke) forControlEvents:UIControlEventAllEvents];

theoknock

# Continuously monitor the run state of an app
# identified by the specified name and
# launches the app if not running

while (true); do
ps_out=`ps -ef | grep $1 | grep -v 'grep' | grep -v $0`
result=$(echo $ps_out | grep "$1")
if [[ "$result" == "" ]]; then
    open -a /Applications/AVS\ Server.app/
osascript -e "set volume input volume 100"