walee-balogun

### This gist is a part of the NestJS Zero to Hero course on Udemy.
### https://www.udemy.com/course/nestjs-zero-to-hero/?referralCode=F672C0C701844DC91F4D


To run PostgreSQL on Docker, run the following in your Terminal:

docker run --name postgres-nest -p 5432:5432 -e POSTGRES_PASSWORD=postgres -d postgres

walee-balogun

/**
 * Instagram web unfollow script
 *
 * WHAT IS IT?
 * A script to unfollow people in the instagram website
 *
 * WHY?
 * I needed to clean my account so I quickly did this
 *
 * HOW TO USE:

walee-balogun

You need to provide some classes and decorators yourself to maintain the same style as typeorm@2.x.

1. EntityRepository -> CustomRepository

@EntityRepository(UserEntity)
export class UserRepository extends Repository<UserEntity> {}

↓

walee-balogun

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

walee-balogun

http://cronus.allowed.org works for me, 2018.1.6

walee-balogun

private lateinit var binding: ActivityMainBinding
binding = DataBindingUtil.setContentView(this, R.layout.activity_main)
// Set view model
binding.viewModel = viewModel
// Execute pending binding data
binding.executePendingBindings()
  
// View model
val viewModel = ViewModelProviders.of(this, viewModelFactory).get(MainViewModel::class.java)  

walee-balogun

1. The Layer Tree

Core Animation's original name is Layer Kit

Core Animation is a compositing engine; its job is to compose different pieces of visual content on the screen, and to do so as fast as possible. The content in question is divided into individual layers stored in a hierarchy known as the layer tree. This tree forms the underpinning for all of UIKit, and for everything that you see on the screen in an iOS application.

In UIView, tasks such as rendering, layout and animation are all managed by a Core Animation class called CALayer. The only major feature of UIView that isn’t handled by CALayer is user interaction.

There are four hierarchies, each performing a different role:

• view hierarchy
• layer tree

walee-balogun

You can use this class to realize a simple sectioned RecyclerView.Adapter without changing your code.

The RecyclerView should use a LinearLayoutManager. You can use this code also with the TwoWayView with the ListLayoutManager (https://github.com/lucasr/twoway-view)

This is a porting of the class SimpleSectionedListAdapter provided by Google

Example:

walee-balogun

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * 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

walee-balogun

public class ColoredSnackBar {

    private static final int red = 0xfff44336;
    private static final int green = 0xff4caf50;
    private static final int blue = 0xff2195f3;
    private static final int orange = 0xffffc107;


    private static View getSnackBarLayout(Snackbar snackbar) {
        if (snackbar != null) {