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What does “%” (percent) do in PowerShell?
...at the % operation starts script blocks after the pipeline, although about_Script_Blocks indicates the % isn't necessary.
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How to merge two arrays in JavaScript and de-duplicate items
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With Underscore.js or Lo-Dash you can do:
console.log(_.union([1, 2, 3], [101, 2, 1, 10], [2, 1]));
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>
http://underscorejs.org/#union
http://lodash.com/docs#union
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Combine two ActiveRecord::Relation objects
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If you want to combine using AND (intersection), use merge:
first_name_relation.merge(last_name_relation)
If you want to combine using OR (union), use or†:
first_name_relation.or(last_name_relation)
† Only in ActiveRecord 5+; for 4.2 install the where-or backport.
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How do I add a Fragment to an Activity with a programmatically created content view
..., and that view must have a custom id. Using the default id will crash the app. Here's the updated code:
public class DebugExampleTwo extends Activity {
private static final int CONTENT_VIEW_ID = 10101010;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.on...
Use a URL to link to a Google map with a marker on it
...s URLs introduces universal cross-platform syntax that you can use in your applications.
Have a look at the following document:
https://developers.google.com/maps/documentation/urls/guide
You can use URLs in search, directions, map and street view modes.
For example, to show the marker at specif...
What is the best way to find the users home directory in Java?
...FolderPath allows you to retrieve special folders, like My Documents (CSIDL_PERSONAL) or Local Settings\Application Data (CSIDL_LOCAL_APPDATA).
Sample JNA code:
public class PrintAppDataDir {
public static void main(String[] args) {
if (com.sun.jna.Platform.isWindows()) {
...
Scrolling a flexbox with overflowing content
...g post: http://geon.github.io/programming/2016/02/24/flexbox-full-page-web-app-layout
Basically, to make a flexbox cell scrollable, you have to make all its parents overflow: hidden;, or it will just ignore your overflow settings and make the parent larger instead.
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Git Blame Commit Statistics
...git-fame that might be useful.
Installation and usage:
$ gem install git_fame
$ cd /path/to/gitdir
$ git fame
Output:
Statistics based on master
Active files: 21
Active lines: 967
Total commits: 109
Note: Files matching MIME type image, binary has been ignored
+----------------+-----+-----...
How to set delay in android?
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If you use delay frequently in your app, use this utility class
import android.os.Handler;
public class Utils {
// Delay mechanism
public interface DelayCallback{
void afterDelay();
}
public static void delay(int secs, final DelayC...
Append a Lists Contents to another List C#
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Here is my example:
private List<int> m_machinePorts = new List<int>();
public List<int> machinePorts
{
get { return m_machinePorts; }
}
Init()
{
// Custom function to get available ethernet ports
List<i...