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1. Download the Arduino IDE, tested with 1.6.7 on OSX and Windows only but Linux should also work.

2. Start the IDE and from the menu, Preferences, add the following to "Additional Boards Manager URLs" https://redbearlab.github.io/arduino/package_redbear_index.json

3. From the menu, Tools > Board, select "Boards Manager" and install the RedBear Duo board support package to the IDE.

4. Connect the Duo to your computer through the USB port of the Duo. Note that, it is not the RBLink's USB port if you are going to use the RBLink for Grove System components, the following photo shows the setup (connected to Grove RGB LED):

   

5. From the menu, Tools > Board, select RedBear Duo under RedBear IoT Boards.

6. Select the Port under the Tools menu.

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Learn ES2015

Original article could be read here.

Arrow Functions to Make Coding Fun

Help to write functions very quickly. This feature is known as lambdas in other language.

ES5:

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Bypass Gatekeeper

Have you experienced opening new installed app on mac osx and got "Verifying blabla.app" message? It will be troublesome if you got stuck waiting the verifying process done. In order to ignore this check, you need to bypass Gatekeeper in osx. Just try this, open a terminal and run the command below:

$ cd /Applications
$ xattr -d com.apple.quarantine blabla.app

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    ACTION = build
    AD_HOC_CODE_SIGNING_ALLOWED = NO
    ALTERNATE_GROUP = staff
    ALTERNATE_MODE = u+w,go-w,a+rX
    ALTERNATE_OWNER = grantdavis
    ALWAYS_SEARCH_USER_PATHS = NO
    ALWAYS_USE_SEPARATE_HEADERMAPS = YES
    APPLE_INTERNAL_DEVELOPER_DIR = /AppleInternal/Developer
    APPLE_INTERNAL_DIR = /AppleInternal
    APPLE_INTERNAL_DOCUMENTATION_DIR = /AppleInternal/Documentation

berkedel

How to Configure Text Editors and IDEs for React.js

Tips and tricks on how to configure your favorite text editor or IDE to work with React.js/ES6+/JSX.

WebStorm

Create a new project based on React Starter Kit template

berkedel

Cocoapod Troubleshooting

Stuck on installing forever

$ pod repo remove master
$ pod setup
$ pod install --verbose

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#Intro

Kotlin is a new programming language for the JVM. It produces Java bytecode, supports Android and generates JavaScript. The latest version of the language is Kotlin 1.0

Kotlin project website is at kotlinlang.org.

All the codes here can be copied and run on Kotlin online editor.

Let's get started.

berkedel

This is a quick guide to Kotlin programming language. The previous part of this guide is here

#Object Oriented

fun main(args : Array<String>) {
  class local (val x : Int)
  
  val y = local(10)
 println("${y.x}")

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#Control Structures

##If statement

Kotlin if statement should look familiar with other language

fun main(args : Array<String>) {
 val total = 10

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Show

Pushes the destination view controller onto the navigation stack, moving the source view controller out of the way (destination slides overtop from right to left), providing a back button to navigate back to the source - on all devices Example: Navigating inboxes/folders in Mail

Show Detail

Replaces the detail/secondary view controller when in a UISplitViewController with no ability to navigate back to the previous view controller Example: In Mail on iPad in landscape, tapping an email in the sidebar replaces the view controller on the right to show the new email