rnystrom’s gists

rnystrom / gist:5811387

Last active December 18, 2015 16:29

Example of logging into Github and getting user info using ReactiveCocoa and Octokit.

	- (void)viewDidLoad {
	[super viewDidLoad];

	RAC(self.loginButton, enabled) = [RACSignal combineLatest:@[
	self.usernameTextField.rac_textSignal,
	self.passwordTextField.rac_textSignal]
	reduce:^(NSString username, NSString password) {
	return @([username length] > 0 && [password length] > 0);
	}];

rnystrom / gist:5831736

Created June 21, 2013 14:53

Login to Github and display user info

	- (void)viewDidLoad {
	[super viewDidLoad];

	RAC(self.nameLabel, text) = RACAble([GHDataStore sharedStore], client.user.name);
	RAC(self.emailLabel, text) = RACAble([GHDataStore sharedStore], client.user.email);
	RAC(self.companyLabel, text) = RACAble([GHDataStore sharedStore], client.user.company);
	RAC(self.loginLabel, text) = RACAble([GHDataStore sharedStore], client.user.login);
	RAC(self.reposLabel, text) = [[RACSignal combineLatest:@[
	RACAble([GHDataStore sharedStore], client.user.publicRepoCount),
	RACAble([GHDataStore sharedStore], client.user.privateRepoCount)

rnystrom / gist:5912541

Created July 2, 2013 19:52

	// get user settings
	SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(this);
	boolean doUpdates = sharedPref.getBoolean(SettingsActivity.UPDATES_KEY, true);
	boolean doRally = sharedPref.getBoolean(SettingsActivity.RALLY_KEY, true);
	boolean doLeads = sharedPref.getBoolean(SettingsActivity.LEAD_KEY, true);

	// subscribe to channels based on user settings
	if (doUpdates) PushService.subscribe(this, Update.UPDATES_NOTIFICATION_KEY, UpdatesDetail.class);
	if (doRally) PushService.subscribe(this, Update.RALLY_NOTIFICATION_KEY, UpdatesDetail.class);
	if (doLeads) PushService.subscribe(this, Update.LEAD_NOTIFICATION_KEY, UpdatesDetail.class);

rnystrom / coloroverlay

Last active December 22, 2015 22:39

Overlay a directory of PNGs with a solid color. You'll have to escape quotes (any solution to this?).

	#!/bin/bash
	# ex:
	# coloroverlay black
	# coloroverlay 'rgba\$0,0,0,0.5\$'

	COLOR=$1

	ls *.png \| awk '{print("convert "$1" \$ -clone 0 -fill '$COLOR' -draw \"color 0,0 reset\" \$ -compose atop -composite "$1)}' \| /bin/sh

rnystrom / MOC Creation

Created March 11, 2014 17:37

	- (NSManagedObjectContext *)managedObjectContext {
	if (! _managedObjectContext) {
	NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"Moviedo" withExtension:@"momd"];
	NSManagedObjectModel *managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL];

	_managedObjectContext = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSMainQueueConcurrencyType];
	_managedObjectContext.persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:managedObjectModel];

	NSURL *storeURL = [[[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject] URLByAppendingPathComponent:@"Moviedo.sqlite"];
	NSDictionary *options = @{

rnystrom / :(

Created November 3, 2014 16:37

A friendly challenge to anyone w/ functional chops to improve this function. No holds barred: op overloading, enum/struct/class, everything-is-a-singleton... go for it! The only rule is no forced unwrapping (e.g. !).

	import Foundation
	import ImageIO

	func datesFromImagesInDir(dir: String) -> [NSDate] {
	let fm = NSFileManager.defaultManager()
	var error: NSError?

	let df = NSDateFormatter()
	df.dateFormat = "yyyy:MM:dd HH:mm:ss"

rnystrom / gist:c9f3f0e8b16cd407a84e

Created November 14, 2014 19:31

	func showScheme(sender: ScalingPageControl) {
	performSegueWithIdentifier(SegueIdentifier.PresentSchemeSegue.rawValue/* :( */, sender: pageControl)
	}

rnystrom / iOS @3x assets script

Created November 26, 2014 01:52

Save this shell script to generate @2x and 1x PNG assets for your apps. Requires Imagemagick (http://www.imagemagick.org/). These will probably look shitty and blurred.

	#!/bin/sh
	# Example usage
	# cd into directory that has @3x images
	# ./whatever-you-name-this.sh
	# Remember to chmod +x the script

	resize () {
	ls *@3x.png \| awk '{print("convert "$1" -filter box -resize '$1' "$1)}' \| sed 's/@3x/'$2'/2' \| /bin/sh
	}

rnystrom / RN3DTouchGestureRecognizer.swift

Last active February 3, 2018 22:58

RN3DTouchGestureRecognizer

	//
	// RN3DTouchGestureRecognizer.swift
	//
	// Created by Ryan Nystrom on 10/10/15.
	// Copyright © 2015 Ryan Nystrom. All rights reserved.
	//

	import UIKit.UIGestureRecognizerSubclass

	class RN3DTouchGestureRecognizer: UIGestureRecognizer {

rnystrom / gist:5c1e200b4ec9185bdbe84daa5f9fce0b

Created December 19, 2016 19:17

	// iterate newResultsArray in ascending order
	// if na[i] == oa[j] and na[i+1] == oa[j+1], assign them to the opposite index+1
	// pass 4 is for ascending and 5 descending, block covers logic for both
	void (^pass4And5Block)(BOOL, vector<IGListRecord>&, vector<IGListRecord>&) = ^(BOOL ascending, vector<IGListRecord> &newResults, vector<IGListRecord> &oldResults) {
	const NSInteger offset = ascending ? 1 : -1;
	for (NSInteger i = ascending ? 0 : newCount - 1;
	(ascending && i < newCount - 1) \|\| (!ascending && i > 0);
	ascending ? i++ : i--) {

	// don't check block moves for new elements

Ryan Nystrom rnystrom