robhinds

public void startElement(String uri, String localName, String qName, Attributes atts) {
  	chars = new StringBuffer();
}

public void characters(char ch[], int start, int length) {
  	chars.append(new String(ch, start, length));
}

public void endElement(String uri, String localName, String qName) throws SAXException {
  	if (localName.equalsIgnoreCase("title")){

robhinds

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    refreshList();
}

private void refreshList(){
  rssService = new RssService(this);
  rssService.execute(BLOG_URL);
}

robhinds

public class RssService extends AsyncTask<String, Void, List<Article>> {

  private ProgressDialog progress;
	private Context context;
	private ArticleListFragment articleListFrag;

	public RssService(ArticleListFragment articleListFragment) {
		context = articleListFragment.getActivity();
		articleListFrag = articleListFragment;
		progress = new ProgressDialog(context);

robhinds

@Override
protected List<Article> doInBackground(String... urls) {
	String feed = urls[0];
	URL url = null;
	try {

		SAXParserFactory spf = SAXParserFactory.newInstance();
		SAXParser sp = spf.newSAXParser();
		XMLReader xr = sp.getXMLReader();

robhinds

protected  void onPostExecute(final List<Article>  articles) {
	Log.e("ASYNC", "POST EXECUTE");
	articleListFrag.getActivity().runOnUiThread(new Runnable() {
		@Override
		public void run() {
			for (Article a : articles){
				Log.d("DB", "Searching DB for GUID: " + a.getGuid());
				DbAdapter dba = new DbAdapter(articleListFrag.getActivity());
				dba.openToRead();
				Article fetchedArticle = dba.getBlogListing(a.getGuid());

robhinds

ArticleListAdapter adapter = new ArticleListAdapter(articleListFrag.getActivity(), articles);
articleListFrag.setListAdapter(adapter);
adapter.notifyDataSetChanged();

robhinds

def sqrt(x: Double): Double = ...

robhinds

def sqrt = {x-> ... }

robhinds

def sqrtIter(guess: Double, x: Double): Double =
  if (isGoodEnough(guess, x)) guess
  else sqrtIter(improve(guess, x), x)

def improve(guess: Double, x: Double) =
  (guess + x / guess) / 2
  
def isGoodEnough(guess: Double, x: Double) =
  abs(guess * guess - x) < 0.001
  

robhinds

//Improve the guess using Newton's method
def improve = { guess, x ->
  (guess + x / guess) / 2
}

//Check if our guess is good enough, within a chosen threshold
def isGoodEnough = {guess, x ->
  abs(guess * guess - x) < 0.001
}