paulfranco

Interview Questions

Kotlin

Q1: What is a primary constructor in Kotlin? ☆☆

Answer: The primary constructor is part of the class header. Unlike Java, you don't need to declare a constructor in the body of the class. Here's an example:

nic0lette

/*
 * Copyright 2017 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

siddharthkp

This proposal is not longer active. Context: https://twitter.com/siddharthkp/status/909818777314902016

---

nickbutcher

<?xml version="1.0" encoding="utf-8"?>
<!--
  Copyright 2016 Google Inc.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

danielgomezrico

// How to use it inside any gradle build
apply from: "quality.gradle"

jaydp17

apply plugin: 'com.android.application'
apply plugin: 'com.android.databinding'
apply plugin: 'kotlin-android'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "com.example.mvptestkotlin"

danielgomezrico

<?xml version="1.0" encoding="utf-8"?>
<!-- This file should be outside of release manifest (in this case app/src/mock/Manifest.xml -->
<manifest
  xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.example.tests">
  
  <!-- For espresso testing purposes, this is removed in live builds, but not in dev builds -->
  <uses-permission android:name="android.permission.SET_ANIMATION_SCALE" />
  <uses-permission android:name="android.permission.DISABLE_KEYGUARD" />
  <uses-permission android:name="android.permission.WAKE_LOCK" />

bryanstern

/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Circle Internet Financial
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is

seanKenkeremath

Unless specified otherwise, all of the below tinting applies to both Lollipop and pre-Lollipop using AppCompat v21. To use the support version of these attributes, remove the android namespace.  For instance, "android:colorControlNormal" becomes "colorControlNormal".  These attributes will be propagated to their corresponding attributes within the android namespace for devices running Lollipop.  Any exceptions to this will be noted by including the "android:" prefix.

All Clickable Views:
-----------
* ripple effect (Lollipop only) -- "colorControlHighlight"

Status Bar:
------------
* background (Lollipop only) - "colorPrimaryDark"

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---