MaTriXy

#!/bin/bash

# store the current dir
CUR_DIR=$(pwd)

# Let the person running the script know what's going on.
echo "\n\033[1mPulling in latest changes for all repositories...\033[0m\n"

# Find all git repositories and update it to the master latest revision
for i in $(find . -name ".git" | cut -c 3-); do

MaTriXy

Centralize the support libraries dependencies in gradle

Working with multi-modules project, it is very useful to centralize the dependencies, especially the support libraries.

A very good way is to separate gradle build files, defining something like:

root
  --gradleScript
 ----dependencies.gradle

MaTriXy

def getVersionName = { ->
    try {
        def branchout = new ByteArrayOutputStream()
        exec {
            commandLine 'git', 'rev-parse', '--abbrev-ref', 'HEAD'
            standardOutput = branchout
        }
        def branch = branchout.toString().trim()

        if (branch.equals("master")) {

MaTriXy

task('copyAll') {
    android.applicationVariants.all { variant ->
        variant.outputs.each { output ->
            if (!output.outputFile.name.contains('unsigned')) {
                task("copy${variant.name.capitalize()}", type: Copy) {
                    from(output.outputFile)
                    into("/path-to-your-prefered-folder/")
                }
                dependsOn("copy${variant.name.capitalize()}")
            }

MaTriXy

apply plugin: 'java'
apply plugin: 'maven-publish'

repositories { jcenter() }
dependencies { compile 'org.slf4j:slf4j-api:1.7.12' }

publishing {
  repositories {
    maven {
      url "http://127.0.0.1:8081/artifactory/libs-release-local/"

MaTriXy

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//

package com.google.firebase.provider;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;

MaTriXy

public static class ExampleViewHolder extends RecyclerView.ViewHolder 
    implements View.OnClickListener {

    private int originalHeight = 0;
    private boolean isViewExpanded = false;
    private YourCustomView yourCustomView
    
    public ExampleViewHolder(View v) {
     super(v);
     v.setOnClickListener(this);

MaTriXy

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

MaTriXy

<android.support.design.widget.CoordinatorLayout
	android:id="@+id/main_content"
	xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:app="http://schemas.android.com/apk/res-auto"
	android:layout_width="match_parent"
	android:layout_height="match_parent">

	<android.support.design.widget.AppBarLayout
		android:id="@+id/appbar"
		android:layout_width="match_parent"

MaTriXy

Terminal Commands:

One webcam:

ffmpeg -f alsa -ac 2 -i hw:1,0 -f v4l2 -s 1280x720 -r 10 -i /dev/video1 -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -r 25 -g 20 -b:v 2500k -codec:a libmp3lame -ar 44100 -threads 6 -b:a 11025 -bufsize 512k -f flv rtmp://a.rtmp.youtube.com/live2/YOURSTREAMNAMEHERE

Two webcam overlay:

ffmpeg -f alsa -ac 2 -i hw:1,0 -f v4l2 -s 1280x720 -r 10 -i /dev/video1 -f v4l2 -s 320x240 -r 10 -i /dev/video0 -filter_complex "[1:v]setpts=PTS-STARTPTS[bg]; [2:v]setpts=PTS-STARTPTS[fg]; [bg][fg]overlay=shortest=1 [out]" -map "[out]" -map 0:a -vcodec libx264 -pix_fmt yuv420p -preset veryfast -r 25 -g 20 -b:v 2500k -codec:a libmp3lame -ar 44100 -threads 6 -b:a 11025 -bufsize 512k -f flv rtmp://a.rtmp.youtube.com/live2/YOURSTREAMNAMEHERE