Check the $PSCmdlet variable:

    $PSCmdlet.ParameterSetName

You can check in your script:

    $PsCmdlet.ParameterSetName

I have some image tags on a site like this.
 
    &lt;img src=&quot;img.png&quot;/&gt;

When I try to load them they are only half loading. When I checked the request in the network console I see that the response is: 

&gt; 206 Partial Content

I googled it and it says that if there is a range set in header, it will be like this. But where are these headers actually set? And how do I avoid this and load the full images?

What does the HTTP 206 Partial Content status message mean and how do I fully load resources?

When I deploy my application on Heroku server, the server generate an app automatically and I found on my resource a git url. Example: `git@heroku.com:myapp-ss-1338.git`. How can I access this url to view source code or folder via a web browser?

Access to a file or folder on heroku server

I&#39;ve used advanced parameter handling to support multiple parameter sets. Is there any pre-defined variable or way to determine which parameter set has been used to call the script?

e.g. something like

    if($parameterSet -eq &quot;set1&quot;) { ... } elseif ($parameterSet -eq &quot;set2&quot;) { ... }


?

Which parameter set has been used?

I've used advanced parameter handling to support multiple parameter sets. Is there any pre-defined variable or way to determine which parameter set has been used to call the script?
e.g. something like
<pre><code class="hljs language-php">if($parameterSet -eq "set1") { ... } elseif ($parameterSet -eq "set2") { ... }
</code></pre>
?

I&#39;ve got a PowerShell script as follows

    ##teamcity[progressMessage &#39;Beginning build&#39;]
    # If the build computer is not running the appropriate version of .NET, then the build will not run. Throw an error immediately.
    if( (ls &quot;$env:windir\Microsoft.NET\Framework\v4.0*&quot;) -eq $null ) {
        throw &quot;This project requires .NET 4.0 to compile. Unfortunately .NET 4.0 doesn&#39;t appear to be installed on this machine.&quot;
        ##teamcity[buildStatus status=&#39;FAILURE&#39; ]
    }

    ##teamcity[progressMessage &#39;Setting up variables&#39;]
    # Set up variables for the build script
    $invocation = (Get-Variable MyInvocation).Value
    $directorypath = Split-Path $invocation.MyCommand.Path
    $v4_net_version = (ls &quot;$env:windir\Microsoft.NET\Framework\v4.0*&quot;).Name
    $nl = [Environment]::NewLine

    Copy-Item -LiteralPath &quot;$directorypath\packages\NUnit.2.6.2\lib\nunit.framework.dll&quot; &quot;$directorypath\Pandell.Tests\bin\debug&quot; -Force

    ##teamcity[progressMessage &#39;Using msbuild.exe to build the project&#39;]
    # Build the project using msbuild.exe.
    # Note we&#39;ve already determined that .NET is already installed on this computer.
    cmd /c C:\Windows\Microsoft.NET\Framework\$v4_net_version\msbuild.exe &quot;$directorypath\Pandell.sln&quot; /p:Configuration=Release
    cmd /c C:\Windows\Microsoft.NET\Framework\$v4_net_version\msbuild.exe &quot;$directorypath\Pandell.sln&quot; /p:Configuration=Debug

    # Break if the build throws an error.
    if(! $?) {
        throw &quot;Fatal error, project build failed&quot;
        ##teamcity[buildStatus status=&#39;FAILURE&#39; ]
    }

    ##teamcity[progressMessage &#39;Build Passed&#39;]
    # Good, the build passed
    Write-Host &quot;$nl project build passed.&quot;  -ForegroundColor Green


    ##teamcity[progressMessage &#39;running tests&#39;]
    # Run the tests.
    cmd /c $directorypath\build_tools\nunit\nunit-console.exe $directorypath\Pandell.Tests\bin\debug\Pandell.Tests.dll

    # Break if the tests throw an error.
    if(! $?) {
        throw &quot;Test run failed.&quot;
        ##teamcity[buildStatus status=&#39;FAILURE&#39; ]
    }

    ##teamcity[progressMessage &#39;Tests passed&#39;]

From what I&#39;m lead to believe, [an uncaught `Throw`][1] will result in an exit code of `1`, but unfortunately TeamCity is saying otherwise.

    [19:32:20]Test run failed.
    [19:32:20]At C:\BuildAgent\work\e903de7564e599c8\build.ps1:44 char:2
    [19:32:20]+     throw &quot;Test run failed.&quot;
    [19:32:20]+     ~~~~~~~~~~~~~~~~~~~~~~~~
    [19:32:20]    + CategoryInfo          : OperationStopped: (Test run failed.:String) [],
    [19:32:20]   RuntimeException
    [19:32:20]    + FullyQualifiedErrorId : Test run failed.
    [19:32:20]
    [19:32:20]Process exited with code 0
    [19:32:20]Publishing internal artifacts
    [19:32:20][Publishing internal artifacts] Sending build.finish.properties.gz file
    [19:32:20]Build finished

It might also be important to note that my `Execution Mode` is set to `Execute .ps1 script with &quot;-File&quot; argument`.

I tried changing it to `Put script into PowerShell stdin with &quot;-Command -&quot; arguments`, but then it failed with an exit code of `1` even with passing tests. I&#39;m sure that running it as `-File` is going to be the right way.

If I open up the script located at `C:\BuildAgent\work\e903de7564e599c8\build.ps1` and run it manually in CMD, it does the same thing... I.e., the failing tests fail, and the `%errorlevel%` is still `0`.

Yet, if I run it in PowerShell and call `$LASTEXITCODE`, it returns the right code every time.

 [1]: https://devblogs.microsoft.com/powershell/windows-powershell-exit-codes?Redirected=true



Why are my PowerShell exit codes always &quot;0&quot;?

When working in the interactive console if I define a new object and assign some property values to it like this:

    $obj = New-Object System.String
    $obj | Add-Member NoteProperty SomeProperty &quot;Test&quot;

Then when I type the name of my variable into the interactive window Powershell gives me a summary of the object properties and values:

 

    PS C:\demo&gt; $obj
    SomeProperty                                                                                                                                                                                  
    ------------                                                                                                                                                                                  
    Test

I basically want to do just this but from within a function in a script. The function creates an object and sets some property values and I want it to print out a summary of the object values to the Powershell window before returning. I tried using Write-Host within the function:

    Write-Host $obj

But this just output the type of the object not the summary:

    System.Object

How can I have my function output a summary of the object&#39;s property values to the Powershell window?

 



Printing object properties in Powershell

I have a simple textfile and I need a powershell script to replace some parts of the file content.

My current script is the following:

    $content = Get-Content -path &quot;Input.json&quot;

    $content -Replace &#39;&quot;(\d+),(\d{1,})&quot;&#39;, &#39;$1.$2&#39; |  Out-File &quot;output.json&quot;

Is it possible to write it in one line without the content variable, like this?

    Get-Content -path &quot;Input.json&quot; | ??? -Replace &#39;&quot;(\d+),(\d{1,})&quot;&#39;, &#39;$1.$2&#39; |  Out-File &quot;output.json&quot;

I don&#39;t know how I can use the output of the first get-content commandlet in the second command without the $content variable? Is there an automatic powershell variable 

Is it possible to do more replacements than one in a pipeline.

    Get-Content -path &quot;Input.json&quot; | ??? -Replace &#39;&quot;(\d+),(\d{1,})&quot;&#39;, &#39;$1.$2&#39; | ??? -Replace &#39;second regex&#39;, &#39;second replacement&#39; |  Out-File &quot;output.json&quot;

Replace the content of a textfile with a regex in powershell

How do test if the number of characters in $dbUserName is more than eight characters?

I have been unable to locate a command or series of commands that will let me do this. I have only been able to find if the variable is null:

    if ($dbUserName) {
        Write-Output &quot; You left Username blank&quot;
        $dbUserName = read-host
    }

But I would like to next test like this:

    if ($dbUserName [String] &gt; 8 ) }
        Write-Output &quot; Please enter more than 8 characters &quot;
        $dbUserName=read-host &quot; Re-enter database user name&quot;
    }


How can I test that a variable is more than eight characters in PowerShell?

I guess you can&#39;t just do this: 

      $servicePath = $args[0]
      
      if(Test-Path -path $servicePath) &lt;-- does not throw in here

      $block = {

            write-host $servicePath -foreground &quot;magenta&quot;
 
            if((Test-Path -path $servicePath)) { &lt;-- throws here.

                  dowork 
            }
      }

So how can I pass my variables to the scriptblock $block?

Pass arguments to a scriptblock in powershell

I have an attribute directive restricted as follows:

     restrict: &quot;A&quot;

I need to pass in two attributes; a number and a function/callback, accessing them within the directive using the `attrs` object.

If the directive was an element directive, restricted with `&quot;E&quot;` I could to this:

    &lt;example-directive example-number=&quot;99&quot; example-function=&quot;exampleCallback()&quot;&gt;

However, for reasons I won&#39;t go into I need the directive to be an attribute directive.

**How do I pass multiple attributes into an attribute directive?**



How do I pass multiple attributes into an Angular.js attribute directive?

Lets say I have this:

    &lt;div data-uid=&quot;aaa&quot; data-name=&quot;bbb&quot;, data-value=&quot;ccc&quot; onclick=&quot;fun(this.data.uid, this.data-name, this.data-value)&quot;&gt;
And this:

    function fun(one, two, three) {
        //some code
    }

Well this is not working but I have absolutely no idea why. could someone post a working example please?

html &quot;data-&quot; attribute as javascript parameter

I&#39;m getting familiar with Android framework and Java and wanted to create a general &quot;NetworkHelper&quot; class which would handle most of the networking code enabling me to just call web-pages from it.

I followed this article from the developer.android.com to create my networking class: http://developer.android.com/training/basics/network-ops/connecting.html

Code:

    package com.example.androidapp;

    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.Reader;
    import java.io.UnsupportedEncodingException;
    import java.net.HttpURLConnection;
    import java.net.URL;
    
    import android.content.Context;
    import android.net.ConnectivityManager;
    import android.net.NetworkInfo;
    import android.os.AsyncTask;
    import android.util.Log;
    
    
    
    /**
     * @author tuomas
     * This class provides basic helper functions and features for network communication.
     */
    
    
    public class NetworkHelper 
    {
	private Context mContext;
	
	
	public NetworkHelper(Context mContext)
	{
		//get context
		this.mContext = mContext;
	}
	

	/**
	 * Checks if the network connection is available.
	 */
	public boolean checkConnection()
	{
		//checks if the network connection exists and works as should be
		ConnectivityManager connMgr = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
		
		if (networkInfo != null &amp;&amp; networkInfo.isConnected())
		{
			//network connection works
			Log.v(&quot;log&quot;, &quot;Network connection works&quot;);
			return true;
		}
		else
		{
			//network connection won&#39;t work
			Log.v(&quot;log&quot;, &quot;Network connection won&#39;t work&quot;);
			return false;
		}
		
	}
	
	public void downloadUrl(String stringUrl)
	{
		new DownloadWebpageTask().execute(stringUrl);
		
	}
	

	
	//actual code to handle download
	private class DownloadWebpageTask extends AsyncTask&lt;String, Void, String&gt;
	{
		
		
		
		@Override
		protected String doInBackground(String... urls)
		{
			// params comes from the execute() call: params[0] is the url.
            try {
                return downloadUrl(urls[0]);
            } catch (IOException e) {
                return &quot;Unable to retrieve web page. URL may be invalid.&quot;;
            }
		}
		
		// Given a URL, establishes an HttpUrlConnection and retrieves
		// the web page content as a InputStream, which it returns as
		// a string.
		private String downloadUrl(String myurl) throws IOException 
		{
		    InputStream is = null;
		    // Only display the first 500 characters of the retrieved
		    // web page content.
		    int len = 500;
		        
		    try {
		        URL url = new URL(myurl);
		        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
		        conn.setReadTimeout(10000 );
		        conn.setConnectTimeout(15000);
		        conn.setRequestMethod(&quot;GET&quot;);
		        conn.setDoInput(true);
		        // Starts the query
		        conn.connect();
		        int response = conn.getResponseCode();
		        Log.d(&quot;log&quot;, &quot;The response is: &quot; + response);
		        is = conn.getInputStream();

		        // Convert the InputStream into a string
		        String contentAsString = readIt(is, len);
		        return contentAsString;
		        
		    // Makes sure that the InputStream is closed after the app is
		    // finished using it.
		    } finally {
		        if (is != null) {
		            is.close();
		        } 
		    }
		}
		
		// Reads an InputStream and converts it to a String.
		public String readIt(InputStream stream, int len) throws IOException, UnsupportedEncodingException 
		{
		    Reader reader = null;
		    reader = new InputStreamReader(stream, &quot;UTF-8&quot;);        
		    char[] buffer = new char[len];
		    reader.read(buffer);
		    return new String(buffer);
		}
		
	
		// onPostExecute displays the results of the AsyncTask.
        @Override
        protected void onPostExecute(String result) 
        {
            //textView.setText(result);
        	Log.v(&quot;log&quot;, result);
        	
        }
        
	} 
	
}

In my activity class I use the class this way:

    connHelper = new NetworkHelper(this);
...

    if (connHelper.checkConnection())
		{
			//connection ok, download the webpage from provided url
			connHelper.downloadUrl(stringUrl);
		}

Problem I&#39;m having is that I should somehow make a callback back to the activity and it should be definable in &quot;downloadUrl()&quot; function. For example when download finishes, public void &quot;handleWebpage(String data)&quot; function in activity is called with loaded string as its parameter.

I did some googling and found that I should somehow use interfaces to achieve this functionality. After reviewing few similar stackoverflow questions/answers I didn&#39;t get it working and I&#39;m not sure if I understood interfaces properly: https://stackoverflow.com/questions/12616796/how-do-i-pass-method-as-a-parameter-in-java To be honest using the anonymous classes is new for me and I&#39;m not really sure where or how I should apply the example code snippets in the mentioned thread.

So my question is how I could pass the callback function to my network class and call it after download finishes? Where the interface declaration goes, implements keyword and so on?
Please note that I&#39;m beginner with Java (have other programming background though) so I&#39;d appreciate a throughout explanation :) Thank you!

Passing function as a parameter in java

I&#39;m trying to create this generic method to simplify things but I think I messed it up! Can you help with my problem?

This compiles:

    private string ConcatenateText&lt;T1, T2&gt;(MyEntity myEntity) 
        where T1 : Supplier, new()
        where T1 : Employee, new()
        where T2 : SupplierDepartment, new()
        where T2 : EmployeeDepartment, new()
    {
        T1 p = new T1();
        T2 r = new T2();
        //Code here for myEntity treatment
        return mystring;
    }

While this does not compile:

    protected void mybutton1_Click(object sender, EventArgs e)
    {
       string mystring = ConcatenaText&lt;Supplier, SupplierDepartment&gt;(myEntity);
    }
    
    //This does not compile
    protected void mybutton2_Click(object sender, EventArgs e)
    {
       string mystring = ConcatenaText&lt;Employee, EmployeeDepartment&gt;(myEntity);
    }

**Message: The type Supplier cannot be used as type parameter T1 in the generic type or method ConcatenateText&lt;T1, T2&gt;(MyEntity myEntity). There is no implicit reference conversion from Supplier to Employee**

Can this be done? What am I doing wrong? Can it be improved?


**EDIT:**

And MyEntity is just another class in order to process it inside this generic method! It&#39;s not related to the types T. It just an argument. But it&#39;s clear that I can&#39;t do that, using 2 types like that. I thought that I could assign one or another and the CLR independently of my initialization could react as I wanted. I gonna accept the answer who share a little bit more information about it.

Generic with multiple classes

I&#39;m trying to make a shell script which should be used like this:

    ocrscript.sh -from /home/kristoffer/test.png -to /home/kristoffer/test.txt

The script will then ocr convert the image file to a text file. Here is what I have come up with so far:

    #!/bin/bash
    export HOME=/home/kristoffer
    /usr/local/bin/abbyyocr9 -rl Swedish -if ???fromvalue??? -of ???tovalue??? 2&gt;&amp;1

But I don&#39;t know how to get the `-from` and `-to` values. Any ideas on how to do it?

Script parameters in Bash

I would like to write a wrapper method for a webservice, the service accepts 2 mandatory and 3 optional parameters. 

To have a shorter example, I would like to get the following code working 

    def myMethod(pParm1=&#39;1&#39;, pParm2=&#39;2&#39;) {
        println &quot;${pParm1}${pParm2}&quot;
    }
    
    myMethod();
    myMethod(&#39;a&#39;)
    myMethod(pParm2:&#39;a&#39;) // doesn&#39;t work as expected
    myMethod(&#39;b&#39;,&#39;c&#39;)

The output is:

    12
    a2
    [pParm2:a]2
    a2
    bc

What I would like to achieve is to give one parameter and get `1a` as the result.
Is this possible (in the laziest way)?


Groovy method with optional parameters

I&#39;m trying to implement a controller in AngularJS which is used across multiple pages. It makes use of some services. Some of them are loaded on all pages, some - not. I mean it is defined in different files, and these files are loaded independently. But if I do not load these services on all pages I got error:

    Error: Unknown provider: firstOtionalServiceProvider &lt;- firstOtionalService

So, I need to load scripts on all pages. Can I declare dependency as optional in Angular? E.g:

    myApp.controller(&#39;MyController&#39;, [&#39;$scope&#39;, &#39;firstRequiredService&#39;, &#39;secondRequiredService&#39;, &#39;optional:firstOptionalService&#39;, &#39;optional:secondOptionalService&#39;, function($scope, firstRequiredService, secondRequiredService, firstOptionalService, secondOptionalSerivce){

        // No need to check, as firstRequiredService must not be null
        firstRequiredService.alwaysDefined();

        // If the dependency is not resolved i want Angular to set null as argument and check
        if (firstOptionalService) {
            firstOptionalService.mayBeUndefinedSoCheckNull();
        }

    }]);



Optional dependencies in AngularJS

Is it possible in Swift? If not then is there a workaround to do it?

How to define optional methods in Swift protocol?

I&#39;m trying to declare an argument in Swift that takes an optional closure. The function I have declared looks like this:

    class Promise {
     
     func then(onFulfilled: ()-&gt;(), onReject: ()-&gt;()?){       
        if let callableRjector = onReject {
          // do stuff! 
        }
     }

    }
 
But Swift complains that &quot;Bound value in a conditional must be an Optional type&quot; where the &quot;if let&quot; is declared. 


How does one make an optional closure in swift?

Is it possible to point to a specific settings file in order to override the default settings.xml being used by maven for a single command?
Example:

    mvn clean install -Dparam # -&gt; pass specific settings file path as param to override default &quot;home/.m2/settings.xml&quot;

Content Type	Original Author	Original Content on Stackoverflow
Question	D.R.	View Question on Stackoverflow
Solution 1 - Powershell	Shay Levy	View Answer on Stackoverflow
Solution 2 - Powershell	CB.	View Answer on Stackoverflow

Which parameter set has been used?

Powershell Problem Overview

Powershell Solutions

Solution 1 - Powershell

Solution 2 - Powershell

Access to a file or folder on heroku server

What does the HTTP 206 Partial Content status message mean and how do I fully load resources?

Attributions