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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

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sudo service mongod start

sudo service mongod stop

mongo --host 127.0.0.1:27017

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public class ToolbarAlphaScrollBehavior extends CoordinatorLayout.Behavior<android.support.v7.widget.Toolbar> {
    private ColorDrawable mStatusBarColorDrawable;
    private int mStatusBarColor;
    private TextView mTitleView;
    private boolean searchedForTitleView = false;

    public ToolbarAlphaScrollBehavior(Context context, AttributeSet attrs) {
        super(context, attrs);
        mStatusBarColor =  ContextCompat.getColor(context, R.color.primary_dark);
        mStatusBarColor = getColorWithAlpha(0, mStatusBarColor);

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....

  public void startFacebook(String facebookUrl) {

        try {
            Uri uri = null;

            int versionCode = getPackageManager()
                    .getPackageInfo("com.facebook.katana", 0)
                    .versionCode;

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./gradlew app:dependencies

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/*
 * Copyright 2016 Alireza Eskandarpour Shoferi
 *
 * 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

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1. To enable TLS 1.2 in Android 4.4
  Copy TLSSocketFactory.java

  If using HttpsURLConnection:
    => conn.setSSLSocketFactory(new TLSSocketFactory());
  Else if using OkHttp:
    => new OkHttpClient.Builder().setSocketFactory(new TLSSocketFactory()). ... .build();
  Else if using HttpClient:
       sample for legacy apache http library: https://github.com/Kane-Shih/TestApacheHttpClient
    => see: https://stackoverflow.com/questions/2603691/android-httpclient-and-https

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import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',

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// No Security

{
  "rules": {
    ".read": true,
    ".write": true
  }
}

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<ImageButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@android:drawable/ic_button"
    android:background="?attr/selectableItemBackgroundBorderless"
/>

<ImageButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"