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markrickert / ScrollToBottom.js
Last active Jul 15, 2016
Scrolling to the bottom of a React Native ScrollView or ListView
View ScrollToBottom.js
import React, { PropTypes } from 'react'
import {View, ListView, Text } from 'react-native'
export default class ScrollToBottomExample extends React.Component {
constructor (props) {
// Set up our two placeholder values.
this.listHeight = 0
markrickert / capture_image.rb
Created Apr 21, 2015
RubyMotion image capturing module
View capture_image.rb
# Requires BubbleWrap gem with 'bubble-wrap/camera' required.
module ImageCapture
# Usage:
# capture_image({}) do
# # @captured_image should be an instance of UIImage
# end
# Options:
# {
# allows_editing: true,
markrickert / mailman.h
Created Aug 8, 2014
MFMailComposeViewController extracted from UIViewController
View mailman.h
#import <UIKit/UIKit.h>
#import <MessageUI/MessageUI.h>
#import <MessageUI/MFMailComposeViewController.h>
@interface MailMan : NSObject <MFMailComposeViewControllerDelegate> {
@property (nonatomic) UIViewController *vc;
- (id)initWithParentVC:(UIViewController *)vc;
markrickert / cartesian_power.rb
Last active Aug 29, 2015
Cartesian Power Example
View cartesian_power.rb
# Usage
[:true, :false].cartesian_power(2) {|l| p l.inspect }
# "[:true, :true]"
# "[:true, :false]"
# "[:false, :true]"
# "[:false, :false]"
[:true, :false].cartesian_power(3) {|l| p l.inspect }
# "[:true, :true, :true]"
markrickert / example_usage.rb
Last active Aug 29, 2015
RubyMotion In App Purchase example
View example_usage.rb
def purchase_single_product(identifier)
NSLog "Starting purchase process for #{identifier}."
@iap_helper =[identifier]))
@iap_helper.cancelled = cancelled_transaction
@iap_helper.success = transaction_successful
@iap_helper.request_product_info do |success, products|
if success && products.is_a?(Array) && products.count == 1
markrickert / bigdecimal.rb
Created May 23, 2014
RubyMotion BigDecimal conversion methods.
View bigdecimal.rb
class BigDecimal
def to_s
def to_f
def to_i
markrickert /
Last active Aug 29, 2015
DigitalOcean Dokku Server Setup
# Create a DigitalOcean Ubuntu 12.04.3x64 droplet.
# DO NOT USE 13.10. There's a known issue with Dokku
# On the server, install dependencies and Dokku
apt-get update && apt-get upgrade -y
apt-get install -y software-properties-common python-software-properties
wget -qO- | sudo DOKKU_TAG=v0.2.2 bash
# Put the app's hostname into the Dokku VHOST file
markrickert / aliases.bash
Created Jan 22, 2014
wo - "Work On", a bash alias for quickly cd-ing into directories
View aliases.bash
# wo = work on
wo() {
code_dir=~/Dropbox # replace it with your development directory
cd $(find $code_dir -type d -maxdepth 3 | grep -i $* | grep -Ev Pods --max-count=1)
markrickert / fix-xcode.rb
Last active Feb 2, 2020
Quick fix to all your Xcode SDK issues. When you update Xcode, just run this script and all is well.
View fix-xcode.rb
#!/usr/bin/env ruby
# fix-xcode
# Mark Rickert <>
# Symlinks all your old SDKs to every time it is updated.
# Create a directory called /SDKs and run this script.
# Each time you upgrade Xcode, run fix-xcode.
markrickert / statesscreen.rb
Created Sep 2, 2013
Example on how to set the background color/view of a ProMotion GroupedTableScreen
View statesscreen.rb
class StatesScreen < PM::TableScreen
title "States"
def will_appear
view.backgroundView = nil
view.backgroundColor = UIColor.redColor
def table_style