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Map.clear() vs new Map : Which one will be better? [duplicate]
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Complicated question. Let's see what happens.
You instantiate a new instance, which is backed with new array. So, garbage collector should clear all the key and values from the previous map, and clear the reference to itself. So O(n) algorithm is executed anyway...
Line-breaking widget layout for Android
...predicate;
import se.fnord.android.layout.PredicateLayout;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.widget.TextView;
public class Predicate extends Activity {
/** Called when the activity is first created. */
@Override
public ...
How do I determine file encoding in OS X?
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@JamesA.Rosen OS X apps like TextEdit do store file encoding as an attribute (named "com.apple.TextEncoding"). It's quite likely that the attributes indicated by that @ include the file encoding attribute. You can use the command xattr -p com.a...
Check if Internet Connection Exists with Javascript? [duplicate]
...online = navigator.onLine;
Read more about the W3C's spec on offline web apps, however be aware that this will work best in modern web browsers, doing so with older web browsers may not work as expected, or at all.
Alternatively, an XHR request to your own server isn't that bad of a method for te...
Smooth GPS data
...ement; variance = accuracy*accuracy;
} else {
// else apply Kalman filter methodology
long TimeInc_milliseconds = TimeStamp_milliseconds - this.TimeStamp_milliseconds;
if (TimeInc_milliseconds > 0) {
// time has moved on, so the uncert...
Install dependencies globally and locally using package.json
...sn't necessary:
npm config set prefix ~/npm, add $HOME/npm/bin to $PATH by appending export PATH=$HOME/npm/bin:$PATH to your ~/.bashrc.
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Servlet for serving static content
I deploy a webapp on two different containers (Tomcat and Jetty), but their default servlets for serving the static content have a different way of handling the URL structure I want to use ( details ).
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Best way to add Activity to an Android project in Eclipse?
...Double click on AndroidManifest.xml in the package explorer.
Click on the "Application" tab of the manifest editor
Click on "Add.." under the "Application Nodes" heading (bottom left of the screen)
Choose Activity from the list in the dialog that pops up (if you have the option, you want to create a...
How to check internet access on Android? InetAddress never times out
...ld. As of 2013 it served 130 billion requests a day. Let 's just say, your app would probably not be the talk of the day.
Which permissions are required?
<uses-permission android:name="android.permission.INTERNET" />
Just internet access - surprise ^^ (Btw have you ever thought about, how s...
Java project in Eclipse: The type java.lang.Object cannot be resolved. It is indirectly referenced f
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This happened to me when I imported a Java 1.8 project from Eclipse Luna into Eclipse Kepler.
Right click on project > Build path > configure build path...
Select the Libraries tab, you should see the Java 1.8 jre with an e...