Fatima Mostafa Fatimamostafa

The introduction to Reactive Programming you've been missing

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

	try {
	PackageInfo info = getPackageManager().getPackageInfo(
	"com.audacityit.jigglemed", PackageManager.GET_SIGNATURES);
	for (Signature signature : info.signatures) {
	MessageDigest md = MessageDigest.getInstance("SHA");
	md.update(signature.toByteArray());
	Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
	}
	} catch (Exception e) {

	//Date converter
	public static String dateConverter(String dateFromApi) {
	TimeZone tz = Calendar.getInstance().getTimeZone();

	SimpleDateFormat inputFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
	inputFormat.setTimeZone(TimeZone.getTimeZone("GMT"));

	SimpleDateFormat outputFormat = new SimpleDateFormat("dd MMM h:mm a");
	Date date = null;
	try {

	<?xml version="1.0" encoding="utf-8"?>
	<shape xmlns:android="http://schemas.android.com/apk/res/android">
	<gradient
	android:angle="90"
	android:startColor="#494949"
	android:endColor="#1cffffff"
	android:type="linear" />
	</shape>

	<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
	<item
	android:bottom="0dp"
	android:right="0dp"
	android:top="0dp">

	<shape android:shape="line">

	<stroke
	android:width="1dp"

	private Map<Integer, Person> map;
	private SparseArray<Person> sparseArray;


	//Memory allocation 17.45
	public void onMapBtnClick() {
	map = new Hashmap();
	for(int i = 0; i< 10000; i++) {
	Person p = new Person(i, "Person " + i);
	map.put(i, p);