Ali Rezaiyan rezaiyan

Functional Programming is a model of programming that transform and compose stream of immutable sequences by applying map, filter and reduce. Events are immutable because you can't change history.
Reactive Programming is a model of programming focuses on data flow and change propagation.
ReactiveX is an API that focuses on asynchronous composition and manipulation of observable streams of data or events by using a combination of the Observer pattern, Iterator pattern, and features of Functional Programming.
RxJava is the open-source implementation of ReactiveX in Java.
RxJava is a Java VM implementation of ReactiveX (Reactive Extensions): a library for composing asynchronous and event-based programs by using observable sequences.
RxAndroid is a lightweight extension to RxJava that providers a Scheduler for Android’s Main Thread, as well as the ability to create a Scheduler that runs on any given Android Handler class.
The two main classes are Observable and Subscriber.
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Not for everyone. Each programmer has their own appreciation of what is good coding music.

For when I need to think deep, debug something, or design

(From most influential to least)

This command is for Ubuntu based distros

sudo apt install aria2 youtube-dl

chmod +x [course_name].sh

	#
	# Circle CI & gradle.properties live in harmony
	#
	# Android convention is to store your API keys in a local, non-versioned
	# gradle.properties file. Circle CI doesn't allow users to upload pre-populated
	# gradle.properties files to store this secret information, but instaed allows
	# users to store such information as environment variables.
	#
	# This script creates a local gradle.properties file on current the Circle CI
	# instance. It then reads environment variable TEST_API_KEY_ENV_VAR which a user

	public class PermissionUtil {
	/*
	* Check if version is marshmallow and above.
	* Used in deciding to ask runtime permission
	* */
	public static boolean shouldAskPermission() {
	return (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M);
	}
	private static boolean shouldAskPermission(Context context, String permission){
	if (shouldAskPermission()) {

	package com.androidrecipes.downloader;

	import android.app.Activity;
	import android.app.DownloadManager;
	import android.content.BroadcastReceiver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.content.SharedPreferences;
	import android.database.Cursor;

	import android.annotation.SuppressLint
	import android.content.Context
	import android.content.SharedPreferences
	import com.hardiktrivedi.gdg_pune_kotlin_workshop.R
	import kotlin.reflect.KProperty

	class PreferenceExtension<T>(val context: Context, val key: String, val defaultValue: T) {
	val prefs: SharedPreferences by lazy { context.getSharedPreferences(context.getString(R.string.app_name), Context.MODE_PRIVATE) }

	operator fun getValue(thisRef: Any?, property: KProperty<*>): T {

	public class VerticalTimelineDecoration extends RecyclerView.ItemDecoration {

	Paint paintFill = null;
	Paint paintStrokeFill = null;
	Paint paintStroke = null;
	Paint paintDotLine = null;

	Paint paintText=null;
	Paint paintTextBold=null;

	#!/bin/bash
	#hi
	SAVEIFS=$IFS
	IFS=$(echo -en "\n\b")
	for rootFolder in */ ; do
	if [ -d $rootFolder"build" ]; then
	echo "do you want to delete build folders of \"${rootFolder%?}\" project?"
	read ans
	if [ "$ans" = "y" ] \|\| [ "$ans" = "Y" ]; then