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Is Java Regex Thread Safe?

...r such use. If you are looking at performance centric code, attempt to reset the Matcher instance using the reset() method, instead of creating new instances. This would reset the state of the Matcher instance, making it usable for the next regex operation. In fact, it is the state maintained in t...
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UIButton inside a view that has a UITapGestureRecognizer

... You can set your controller or view (whichever creates the gesture recognizer) as the delegate of the UITapGestureRecognizer. Then in the delegate you can implement -gestureRecognizer:shouldReceiveTouch:. In your implementation you c...
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How do you remove the title text from the Android ActionBar?

... Try: getActionBar().setDisplayShowTitleEnabled(false); For v.7: getSupportActionBar().setDisplayShowTitleEnabled(false); share | improve t...
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Java Timestamp - How can I create a Timestamp with the date 23/09/2007?

....time types directly. No need for java.sql.Timestamp. PreparedStatement.setObject ResultSet.getObject About java.time The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDate...
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What is the purpose of Serialization in Java?

... @oxbow_lakes An example might be if you maintain an index of a particular set of data for fast searching. An index like that can take a very long time to build, but once you have it built it can be serialised/de-serialised relatively quickly. – David Feb 9 '10...
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Why does the CheckBoxFor render an additional input tag, and how can I get the value using the FormC

...eFor(expression).ToString(); tag.Attributes["value"] = "true"; // set the "checked" attribute if true ModelMetadata metadata = ModelMetadata.FromLambdaExpression(expression, html.ViewData); if (metadata.Model != null) { bool modelChecked; if (Boolean.TryParse(met...
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How to center a WPF app on screen?

...nt to center my WPF app on startup on the primary screen. I know I have to set myWindow.Left and myWindow.Top, but where do I get the values? ...
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Enable access control on simple HTTP server

...ple-cors-http-server.py and it will launch your modified server which will set the CORS header for every response. With the shebang at the top, make the file executable and put it into your PATH, and you can just run it using simple-cors-http-server.py too. Python 3 solution Python 3 uses SimpleH...
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AsyncTask Android example

...ter updating your TextView: TextView txt = findViewById(R.id.output); txt.setText("Executed"); Put them in onPostExecute(). You will then see your TextView text updated after the doInBackground completes. I noticed that your onClick listener does not check to see which View has been selected. I...
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How did Google manage to do this? Slide ActionBar in Android application

...on = (ImageView) rowView.findViewById(R.id.menu_icon); rowView.setTag(viewHolder); } MenuItem holder = (MenuItem) rowView.getTag(); String s = items[position].label; holder.label.setText(s); holder.icon.setImageResource(items[position].icon); ...