Only `ExpandoObject` can have dynamic properties.

**Edit**:
Here is an example of [Expand Object][1] usage (from its MSDN description):

    dynamic sampleObject = new ExpandoObject();
    sampleObject.TestProperty = &quot;Dynamic Property&quot;; // Setting dynamic property.
    Console.WriteLine(sampleObject.TestProperty );
    Console.WriteLine(sampleObject.TestProperty .GetType());
    // This code example produces the following output:
    // Dynamic Property
    // System.String

    dynamic test = new ExpandoObject();
    ((IDictionary&lt;string, object&gt;)test).Add(&quot;DynamicProperty&quot;, 5);
    Console.WriteLine(test.DynamicProperty);

  [1]: http://msdn.microsoft.com/en-us/library/system.dynamic.expandoobject.aspx


You can cast `ExpandoObject` to a dictionary and populate it that way, then the keys that you set will appear as property names on the ExpandoObject...

    dynamic data = new ExpandoObject();

    IDictionary&lt;string, object&gt; dictionary = (IDictionary&lt;string, object&gt;)data;
    dictionary.Add(&quot;FirstName&quot;, &quot;Bob&quot;);
    dictionary.Add(&quot;LastName&quot;, &quot;Smith&quot;);

    Console.WriteLine(data.FirstName + &quot; &quot; + data.LastName);

I&#39;m not sure if these paths are duplicates. Given the relative path, how do I determine absolute path using a shell script?

Example:

    relative path: /x/y/../../a/b/z/../c/d

    absolute path: /a/b/c/d

Converting relative path into absolute path?

I have multiple questions.

1. Can I specify the pom.xml in mvn command?
2. Can I mix the goals of another project while executing mvn command on current project ?

  **Eg: mvn clean-otherproject comple-otherproject instal-otherproject compile-thisproject**

I can do this with multiple mvn commands, but Can I do this in single maven command.



specify pom.xml in mvn command and mix goals of other project

I wanna create an anonymous type that I can set the property name dynamically. it doesn&#39;t have to be an anonymous type. All I want to achieve is set any objects property names dynamically. It can be ExpandoObject, but dictionary will not work for me.

What are your suggestions?

Creating an anonymous type dynamically?

<p>I wanna create an anonymous type that I can set the property name dynamically. it doesn't have to be an anonymous type. All I want to achieve is set any objects property names dynamically. It can be ExpandoObject, but dictionary will not work for me.</p>
<p>What are your suggestions?</p>


I am experiencing issues with a WCF REST service. The wire object that I try to return has certain properties not set, resulting in DateTime.MinValue for properties of type DateTime. The service returns an empty document (with HTTP status 200 ???). When I try to call JSON serialization myself, the exception that is thrown is:
&gt; SerializationException: DateTime values that are greater than DateTime.MaxValue or smaller than DateTime.MinValue when converted to UTC cannot be serialized to JSON.

This can be reproduced by running the following code in a console app:

    DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(DateTime));
    MemoryStream m = new MemoryStream();
    DateTime dt = DateTime.MinValue;

    // throws SerializationException in my timezone
    ser.WriteObject(m, dt);
    string json = Encoding.ASCII.GetString(m.GetBuffer());
    Console.WriteLine(json);

Why is this behaviour? I think it is related to my timezone (GMT+1). As DateTime.MinValue is default(DateTime), I would expect that this can be serialized without problems.

Any tips on how to make my REST service behave? I don&#39;t want to change my DataContract.


Why can DateTime.MinValue not be serialized in timezones ahead of UTC?

Apparently `Nullable&lt;int&gt;` and `int?` are equivalent in value. Are there any reasons to choose one over the other?

    Nullable&lt;int&gt; a = null;
    int? b = null;
    a == b; // this is true

Nullable&lt;int&gt; vs. int? - Is there any difference?

I have two lists List&lt;ResultAnalysisFileSql&gt; that I need to combine in third list and remove duplicate values from that lists

A bit hard to explain, so let me show an example of what the code looks like and what I want as a result, in sample I use int type not ResultAnalysisFileSql class.

first_list = [1, 12, 12, 5]

second_list = [12, 5, 7, 9, 1]

The result of combining the two lists should result in this list:
resulting_list = [1, 12, 5, 7, 9]

You&#39;ll notice that the result has the first list, including its two &quot;12&quot; values, and in second_list has an additional 12, 1 and 5 value.


ResultAnalysisFileSql class


 

    [Serializable]
        public partial class ResultAnalysisFileSql
        {
            public string FileSql { get; set; }
    
            public string PathFileSql { get; set; }
    
            public List&lt;ErrorAnalysisSql&gt; Errors { get; set; }
    
            public List&lt;WarningAnalysisSql&gt; Warnings{ get; set; }
    
            public ResultAnalysisFileSql()
            {
    
            }
    
            public ResultAnalysisFileSql(string fileSql)
            {
                if (string.IsNullOrEmpty(fileSql)
                    || fileSql.Trim().Length == 0)
                {
                    throw new ArgumentNullException(&quot;fileSql&quot;, &quot;fileSql is null&quot;);
                }
    
                if (!fileSql.EndsWith(Utility.ExtensionFicherosErrorYWarning))
                {
                    throw new ArgumentOutOfRangeException(&quot;fileSql&quot;, &quot;Ruta de fichero Sql no tiene extensi&#243;n &quot; + Utility.ExtensionFicherosErrorYWarning);
                }
    
                PathFileSql = fileSql;
                FileSql = ObtenerNombreFicheroSql(fileSql);
                Errors = new List&lt;ErrorAnalysisSql&gt;();
                Warnings= new List&lt;WarningAnalysisSql&gt;();
            }
             
            private string ObtenerNombreFicheroSql(string fileSql)
            {
                var f = Path.GetFileName(fileSql);
                return f.Substring(0, f.IndexOf(Utility.ExtensionFicherosErrorYWarning));
            }
    
    
            public override bool Equals(object obj)
            {
                if (obj == null)
                    return false;
                if (!(obj is ResultAnalysisFileSql))
                    return false;
    
                var t = obj as ResultAnalysisFileSql;
                return t.FileSql== this.FileSql
                    &amp;&amp; t.PathFileSql == this.PathFileSql
                    &amp;&amp; t.Errors.Count == this.Errors.Count
                    &amp;&amp; t.Warnings.Count == this.Warnings.Count;
            }
    
    
        }

Any sample code for combine and removing duplicates ?


How to merge 2 List&lt;T&gt; and removing duplicate values from it in C#

I&#39;m using a DataGridView with object data binding to display information about logging entities in a system, retrieved via SOAP from a remote service.
One of the columns is called &quot;Last action&quot; and means the last time the entity logged a message. It is a `System.DateTime` value. When I read the SOAP response (example below), he timestamp obviously contains all the information, up to second fractions.

    &lt;LoggingEntity&gt;
    &lt;host&gt;marty86ce&lt;/host&gt;
    &lt;process&gt;10148&lt;/process&gt;
    &lt;logger&gt;http_core&lt;/logger&gt;
    &lt;appName&gt;httpd&lt;/appName&gt;
    &lt;ffda&gt;true&lt;/ffda&gt;
    &lt;lastAction&gt;2010-10-27T12:00:19.5117509Z&lt;/lastAction&gt;
    &lt;lastHeartbeat&gt;0001-01-01T00:00:00&lt;/lastHeartbeat&gt;
    &lt;channelId&gt;em_9BA2A2B4D0B6E66&lt;/channelId&gt;
    &lt;ffdaChannelId&gt;em_E7C8D1D4DE8EEB9&lt;/ffdaChannelId&gt;
    &lt;/LoggingEntity&gt;

When I display it on the table, I instead can read up to the minutes
![http://i.stack.imgur.com/dLYBz.png][1]
I use the following code to do the data binding when I press the refresh button

    public void RefreshEntities()
    {
        IEntityManagement management = EntityPlugin.GetProxy();
        LoggingEntity[] result = management.FindLoggingEntities(new TemplateQuery { ffdaSpecified = true, ffda = true }); //Remote invocation

        Invoke(new MethodInvoker(delegate { gridEntities.DataSource = result; })); //THIS does the data binding from the array

        Invoke(new MethodInvoker(delegate { btnRefresh.Enabled = true; }));
    }

I would like to know how to control column formatting of data bound values. I think that the format dd/MM/yyyy hh:mm comes from my system&#39;s settings. **How to override formatting settings programmatically?**

Thank you in advance

Full solution code on [Subversion][2] (FFDAGui program) for the Logbus-ng open source project.


  [1]: http://i.stack.imgur.com/dLYBz.png
  [2]: http://logbus-ng.svn.sourceforge.net/viewvc/logbus-ng/trunk/


How to format DateTime columns in DataGridView?

Given the code below, what is the difference between the way `position0` is initialized and the way `position1` is initialized?  Are they equivalent?  If not, what is the difference?

    class Program
    {
        static void Main(string[] args)
        {
            Position position0 = new Position() { x=3, y=4 };

            Position position1 = new Position();
            position1.x = 3;
            position1.y = 4;
        }
    }

    struct Position
    {
        public int x, y;
    }

What do braces after C# new statement do?

**How do I dynamically define a class in Ruby WITH a name?**

I know how to create a class dynamically **without** a name using something like:

    dynamic_class = Class.new do
      def method1
      end
    end

But you can&#39;t specify a class name. I want to create a class dynamically **with** a name. 

Here&#39;s an example of what I want to do but of course it doesn&#39;t actually work.  
(Note that I am not creating an instance of a class but a class definition)

    class TestEval
      def method1
        puts &quot;name: #{self.name}&quot;
      end
    end

    class_name = &quot;TestEval&quot;
    dummy = eval(&quot;#{class_name}&quot;)

    puts &quot;dummy: #{dummy}&quot;

    dynamic_name = &quot;TestEval2&quot;
    class_string = &quot;&quot;&quot;
    class #{dynamic_name}
      def method1
      end
    end
    &quot;&quot;&quot;
    dummy2 = eval(class_string)
    puts &quot;dummy2: #{dummy2}&quot; # doesn&#39;t work


Actual output:  

    dummy: TestEval
    dummy2: 

Desired output:

    dummy: TestEval
    dummy2: TestEval2


======================================================

**Answer: A totally dynamic solution using sepp2k&#39;s method**

    dynamic_name = &quot;TestEval2&quot;

    Object.const_set(dynamic_name, Class.new) # If inheriting, use Class.new( superclass )
    dummy2 = eval(&quot;#{dynamic_name}&quot;)
    puts &quot;dummy2: #{dummy2}&quot;



Dynamic Class Definition WITH a Class Name

Im just wondering whether there is a way to call a method where i build the name of the method on the fly with a string.

e.g. I have a method called loaddata
    
    -(void)loadData;

to call this i would normally call it like

    [self loadData];

But i want to be able to call it dynamically with a string e.g.

    NSString *methodName = [[NSString alloc] initWithString:@&quot;loadData&quot;];
    [self methodName];

This is a stupid example but i hope you get my point. I am using it for databinding classes that I am setting up for my IPad application. Hard to explain but to get it to fire I need to work out how to call a method with a string.

Any ideas?

Thanks


Objective C calling method dynamically with a string

Because of a plug-in architecture, I&#39;m trying to add a bean programmatically to my webapp.  I have a Spring bean created through the `@Component` annotation, and i am implementing the `ApplicationContextAware` interface.

My override function looks like this:


    @Override
	public void setApplicationContext(ApplicationContext applicationContext)
			throws BeansException {

        // this fails
		this.applicationContext = (GenericWebApplicationContext) applicationContext;
     }

Basically, I can&#39;t figure out how to add a bean to the applicationContext object given to setApplicationContext.  Can anyone tell me how I am going about this the wrong way?

Ok, this is what i ended up with as the solution:

    @Override
	public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry bdr)
			throws BeansException {
		BeanDefinition definition = new RootBeanDefinition(
				&lt;My Class&gt;.class);

		bdr.registerBeanDefinition(&quot;&lt;my id&gt;&quot;, definition);
	}

Add Bean Programmatically to Spring Web App Context

Can anyone explain or suggest a tutorial to dynamically create a [`ListView`][1] in android? 

Here are my requirements:

 - I should be able to dynamically add new elements by pressing a button.
 - Should be simple enough to understand (possibly without any performance improvements or [convertView][2], for instance)

I know there are quite a few questions on this topic, but I couldn&#39;t find any that answer my question.


  [1]: https://developer.android.com/reference/android/widget/ListView
  [2]: https://developer.android.com/reference/android/widget/Adapter

How do you dynamically add elements to a ListView on Android?

Objective-C has a feature called @dynamic.

Google only lists results about dynamic typing.

I rarely see this in code and I don&#39;t understand what it is used for. Can anyone explain me this? Thanks.

What does @dynamic do in Objective-C?

I&#39;m getting the following error:

&gt; &#39;object&#39; does not contain a definition for &#39;RatingName&#39;

When you look at the anonymous dynamic type, it clearly does have RatingName.

![Screenshot of Error][1]

I realize I can do this with a Tuple, but I would like to understand why the error message occurs.

  [1]: http://i.stack.imgur.com/nafnk.png

Dynamic Anonymous type in Razor causes RuntimeBinderException

How can I pass anonymous types as parameters to other functions? Consider this example:

    var query = from employee in employees select new { Name = employee.Name, Id = employee.Id };
    LogEmployees(query);

The variable `query` here doesn&#39;t have strong type. How should I define my `LogEmployees` function to accept it?

    public void LogEmployees (? list)
    {
        foreach (? item in list)
        {
    
        }
    }

In other words, what should I use instead of `?` marks.

How to pass anonymous types as parameters?

First, and to make things clearer I&#39;ll explain my scenario from the top:

I have a method which has the following signature:

    public virtual void SendEmail(String from, List&lt;String&gt; recepients, Object model)

What I want to do is generate an anonymous object which has the properties of the model object along with the first two parameters as well. Flattening the model object into a PropertyInfo[] is very straightforward. Accordingly, I thought of creating a Dictionary&lt;string, object&gt; which would hold the PropertyInfo&#39;s and the first two params, and then be converted into the anonymous object where the key is the name of the property and the value is the actual value of the property.

Is that possible? Any other suggestions?

Convert Dictionary&lt;string, object&gt; To Anonymous Object?

I have a query that returns an anonymous type and the query is in a method. How do you write this:

    public &quot;TheAnonymousType&quot; TheMethod(SomeParameter)
    {
      using (MyDC TheDC = new MyDC())
      {
         var TheQueryFromDB = (....
                               select new { SomeVariable = ....,
                                            AnotherVariable = ....}
                               ).ToList();

          return &quot;TheAnonymousType&quot;;
        }
    }



Returning anonymous type in C#

In Go, is there a way to satisfy an interface anonymously? It doesn&#39;t seem like there is, but this was my best attempt.

(In the [Playground][1])

    package main

    import &quot;fmt&quot;

    type Thing interface {
        Item() float64
        SetItem(float64)
    }

    func newThing() Thing {
        item := 0.0
        return struct {
            Item (func() float64)
            SetItem (func(float64))
        }{
            Item: func() float64 { return item },
            SetItem: func(x float64) { item = x },
        }
    }

    func main() {
        thing := newThing()
        fmt.Println(&quot;Hello, playground&quot;)
        fmt.Println(thing)
    }


  [1]: http://play.golang.org/p/4i-8o087dg

Content Type	Original Author	Original Content on Stackoverflow
Question	ward87	View Question on Stackoverflow
Solution 1 - C#	Andrew Bezzub	View Answer on Stackoverflow
Solution 2 - C#	stevemegson	View Answer on Stackoverflow

Creating an anonymous type dynamically?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

specify pom.xml in mvn command and mix goals of other project

Converting relative path into absolute path?

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