bitwit’s gists

bitwit / gist:af3e12304a88f18ccee566540cf25cb0

Last active January 31, 2021 18:55

animation stack change after size class changes

	import SwiftUI

	final class SizeClassNotifier: ObservableObject {

	@Published var currentSizeClass: UserInterfaceSizeClass =
	.compact

	func updateSizeClass(sizeClass: UserInterfaceSizeClass?) {
	DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
	self.currentSizeClass = sizeClass ?? .compact

bitwit / Playground.swift

Created December 19, 2020 19:40

Conservation of Mass Jump

	import UIKit
	import PlaygroundSupport
	import SwiftUI

	struct ContentView: View {

	var jumpAmount: CGFloat {
	CGFloat(-time * time + time)
	}
	var scaleX: CGFloat { 1/scaleY }

bitwit / Int+ARKitMetricConversions.swift

Created August 7, 2018 16:27

Easy metric conversions for ARKit Floats using Int extensions

	import ARKit

	// Example usage:
	// let twentyCentimeters: Float = 20.cm
	// let twoMeters: Float = 2.m
	// let oneMillimeter: Float = 1.mm
	// let extent: float3 = float3(20.cm, 10.cm, 1.m)

	extension Int {
	var mm: Float {

bitwit / BasicMarkdownParserExample.js

Last active November 25, 2015 20:18

A functional javascript approach to a basic markdown parser. Inspired by a real interview question.

	var _ = require('underscore')
	var lines = [
	"#The test",
	"###Hello World",
	"This is a new paragraph.",
	"It has a second line",
	"",
	"This is my new paragraph"
	];

bitwit / index.html

Last active August 29, 2015 14:03

Angular js data example

	<html>
	<head>
	<script type="text/preloaded">{"preloaded":true}</script>
	</head>
	<body>
	<div ng-app="appModule"></div>
	</body>
	</html>

bitwit / app.js

Last active August 29, 2015 14:03

Angular data preloading

	angular.module('appModule')
	//app initialization
	.constant('MY_CONFIG', {})
	.config(['MY_CONFIG', function(MY_CONFIG){
	var scripts = document.getElementsByTagName('script');
	for (var i = 0; i < scripts.length; i++) {
	var script = scripts[i];
	if(script.type === 'text/preloaded'){
	var data = JSON.parse(script.innerHTML);
	angular.extend(MY_CONFIG, data);

bitwit / ios view add shadow

Created March 11, 2014 20:55

	- (void)setupShadowForView:(UIView *)view {
	UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:view.frame cornerRadius:10];
	CALayer *viewLayer = view.layer;
	[viewLayer setShadowColor:[UIColor blackColor].CGColor];
	[viewLayer setShadowOpacity:1.0f];
	[viewLayer setShadowRadius:10.0f];
	[viewLayer setShadowPath:[path CGPath]];
	}

bitwit / gist:9122514

Created February 20, 2014 20:27

Only open RFRateMe after a # of app uses

	NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
	int timesOpened = [defaults integerForKey:@"timesOpened"];
	NSLog(@"App has been opened %d times", timesOpened);
	if(timesOpened >= 4){
	[RFRateMe showRateAlert];
	}
	[defaults setInteger:(timesOpened+1) forKey:@"timesOpened"];
	[defaults synchronize];

bitwit / Makefile

Last active December 17, 2015 13:59

Bridging Python and SMILE C++ Libraries For Linux Smile library availiable at: http://genie.sis.pitt.edu/index.php/downloads version used: Linux (x64) / gcc 4.4.5, March 6th 2013

	CXX= g++
	CXXFILES= pysmilebridge.cpp
	CXXINTERMEDIATE= pysmilebridge.o
	CXXOUTPUTLIBS= libpysmilebridge.so
	CXXFLAGS= -O3 -DNDEBUG -ffast-math -Wall -fPIC
	LIBS = -L/path/to/smile/ -lsmile

	all: lib

	lib:

bitwit / ViewController.h

Created February 4, 2013 01:18

The Objective-C ViewController from my blog entry An iOS5 Ready Native Web App Template http://www.bitwit.ca/blog/an-ios5-ready-native-web-app-template/

	#import <UIKit/UIKit.h>
	#import "WebViewController.h"

	@interface ViewController : WebViewController

	@end

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