kiratheone

sealed class Result<out T : Any> {
    data class Success<out T : Any>(val data: T) : Result<T>()
    data class Error(val exception: Exception) : Result<Nothing>()
    object InProgress : Result<Nothing>()

    val extractData: T?
        get() = when (this) {
            is Success -> data
            is Error -> null
            is InProgress -> null

kiratheone

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);

exports.sendNotification = functions.database.ref('/messages/{pushId}/text').onWrite((event) => {
    const data = event.data;
    console.log('Message received');
    if(!data.changed()){
        console.log('Nothing changed');
        return;

kiratheone

This is a list of tweaks to make IntelliJ IDEA work better with OpenJDK 8. Refer to System Properties for Java 2D Technology for the details of the options used below.

Note that the performance boost achieved via the OpenGL-based hardware acceleration pipeline is made possible by using the open-source Radeon driver (for AMD graphics cards) included in the latest stable version (10.3.3 as of now) of the Mesa 3D Graphics Library available in the official Fedora 21 stable repository. Therefore, the gained performance boost might vary based on the types of graphics cards and the versions of the drivers used in your system.

0. Fixing Text Anti-aliasing in Fedora (Ubuntu users may skip this step.)
1. Fixing text anti-aliasing in IntelliJ IDEA

In $IDEA_HOME/bin/idea64.vmoptions (or $IDEA_HOME/bin/idea.vmoptions on a x86 architecture), change

kiratheone

#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 M5.3

Kotlin project website is at kotlin.jetbrains.org.

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

Let's get started.

kiratheone

package com.tinmegali.daggerwithkotlin.room

import android.arch.lifecycle.LiveData
import android.arch.lifecycle.Observer
import java.util.concurrent.CountDownLatch
import java.util.concurrent.TimeUnit

// Extension to allow unit tests on LiveData
// discussion on: https://stackoverflow.com/questions/44270688/unit-testing-room-and-livedata

kiratheone

Unblock Vimeo, Netflix, Reddit, dan Imgur

Linux / BSD / macOS

Tambahkan list di bawah ke /etc/hosts.

Windows

Tambahkan list di bawah ke %System32%\Drivers\etc\hosts

kiratheone

import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.util.ArrayMap;

import java.io.IOException;
import java.util.Collections;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

kiratheone

import android.content.ContentUris
import android.content.Context
import android.database.Cursor
import android.net.Uri
import android.os.Build
import android.os.Environment
import android.provider.DocumentsContract
import android.provider.MediaStore
import android.support.v4.content.CursorLoader
import android.text.TextUtils