swankjesse

import java.math.BigInteger

interface Fibonacci {
  fun fib(n: Int): Int
}

object LawfulGood : Fibonacci {
  override fun fib(n: Int): Int {
    check(n >= 0) { "fib is undefined for negative values: $n" }
    return when (n) {

mrk-han

Install and Create Emulators using AVDMANAGER and SDKMANAGER

TL;DR

For an emulator that mimics a Pixel 5 Device with Google APIs and ARM architecture (for an M1/M2 Macbook):

1. List All System Images Available for Download: sdkmanager --list | grep system-images

2. Download Image: sdkmanager --install "system-images;android-30;google_atd;arm64-v8a"

vgonda

Time to learn some Kotlin!

Here's some of my favorite resources to learn Kotlin, and keep learning. It's by no means a complete list. I'd love to hear what some of your favorites are!

Dive right in

• Huge, awesome list of more resources and projects
• Try out Kotlin right from the browser

avbk

Testing with Robolectric within Android Studio

Prerequisites

• Android Studio (tested with 0.8.10)
• Gradle or Gradle Wrapper (tested with 1.12)
• Robolectric Gradle Plugin (tested with 2.3)
• The Android SDK with API Level 18 installed

0. Setup a project

Setup a new Android project with Android Studio. If you already have done this you can skip this step.

cferdinandi

# Terminal Cheat Sheet

pwd         # print working directory
ls          # list files in directory
cd          # change directory
~           # home directory
..          # up one directory
-           # previous working directory
help        # get help
-h          # get help

stkent

Android Studio Shortcuts (Mac)

Notes:

• Two of the most useful shortcuts utilize the Fn (function) keys. It is therefore recommended that you enable the "Use all F1, F2, etc. keys as standard function keys" option [System Preferences > Keyboard].
• Be sure to enable the Mac OS X 10.5+ keymap in Android Studio [Preferences > Keymap].
• A fairly complete shortcut list can be found here.

Useful symbols:

dciccale

#!/usr/bin/env bash

# checks if branch has something pending
function parse_git_dirty() {
  git diff --quiet --ignore-submodules HEAD 2>/dev/null; [ $? -eq 1 ] && echo "*"
}

# gets the current git branch
function parse_git_branch() {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/\1$(parse_git_dirty)/"

artero

Launch Sublime Text 2 from the Mac OS X Terminal

Sublime Text 2 ships with a CLI called subl (why not "sublime", go figure). This utility is hidden in the following folder (assuming you installed Sublime in /Applications like normal folk. If this following line opens Sublime Text for you, then bingo, you're ready.

open /Applications/Sublime\ Text\ 2.app/Contents/SharedSupport/bin/subl

You can find more (official) details about subl here: http://www.sublimetext.com/docs/2/osx_command_line.html

Installation