John Hatvani johnhatvani

Brisbane, Australia.
johnhatvani.github.io

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johnhatvani / UiButton+Block.

Last active October 10, 2021 04:34

Objective-c runtime fun -- A UIButton that takes a block as an action. The cool thing it does is it adds this action as an instance method at runtime.

	#import <objc/runtime.h>

	typedef void (^buttonAction)(UIButton *sender);
	@implementation UIButton (BlockAction)

	+ (UIButton *) buttonWithType:(UIButtonType)type andAction:(buttonAction)action forControlEvents:(UIControlEvents)controlEvents; {

	UIButton * button = [UIButton buttonWithType:type];

	// suppress undeclared selector warning or else '@selector(action:)' will complain.

johnhatvani / NSObject+SimpleObjectMapping

Last active August 29, 2015 13:57

Simple Object Mapper. A category on NSObject that will construct a instance of your class and assign all values from the dictionary using KVC (make sure your property names are the same as the keys in the dictionary)

	#import <objc/runtime.h>

	@implementation NSObject (SimpleObjectMapping)

	+ (instancetype) objectFromDictionary:(NSDictionary *)dictionary {

	NSObject *instance = [[self.class alloc] init];

	objc_property_t *properties = class_copyPropertyList(self.class, NULL);
	objc_property_t property;

johnhatvani / Dates.playground

Last active March 15, 2023 10:12

Swift Playground #1 adding components to Date using operator overloading.

	import Foundation

	extension Int{
	var day: (Int, Calendar.Component) {
	return (self, .day)
	}

	var month: (Int, Calendar.Component) {
	return (self, .month)
	}

johnhatvani / Radix

Last active August 29, 2015 14:19

	//: Playground - noun: a place where people can play

	import UIKit

	var str = "Hello, playground"

	func max(a:[Int], n:Int) -> Int
	{
	var m = a[0]
	for i in 0...(n - 1) {