Get the type of the current object, then its name.

    this.GetType().Name

Try this:

    Type type = this.GetType().UnderlyingSystemType;  
    String className = type.Name;  



If you call `this.GetType()` you&#39;ll always get the current runtime type regardless of the base class you&#39;re inheriting from.

My concept is - there are 10 pdf files in a website. User can select some pdf files and then select merge to create a single pdf file which contains the selected pages. How can i do this with php?

Merge PDF files with PHP

How to best send additional data upon socket connection?

Client:

    socket.on(&#39;connect&#39;,function(){ 
    //I&#39;d like set some values and pass them up to the node server.
    });

Node.js Server:

    io.on(&#39;connection&#39;, function(client){
    //I&#39;d like to get the data here.
    });

For example sending a user name or email address etc.

Send additional data on socket connection

At `run-time`, inside `base class`, how to find the current child class name ?

How to find the child class name from base class?

<p>At <code>run-time</code>, inside <code>base class</code>, how to find the current child class name ?</p>


I have an enum like:

    public enum Blah
    {
        RED = 2,
        BLUE = 4,
        GREEN = 8,
        YELLOW = 16
    }
    
    Blah colors = Blah.RED | Blah.BLUE | Blah.YELLOW;

How could I remove the color blue from the variable colors?

How to remove an item for a OR&#39;d enum?

I need to know if a Date is between a DateRange. I have three dates:

```c#
// The date range
DateTime startDate;
DateTime endDate;
   
DateTime dateToCheck;
```

The easy solution is doing a comparison, but is there a smarter way to do this?



How to know if a DateTime is between a DateRange in C#

Is it possible to add a constructor extension method? 

Sample Use Case
---------------

I want to add a List&lt; T &gt; constructor to receive specific amount of bytes out of a given partially filled buffer (without the overhead of copying only the relevant bytes and so on): 

    ...
    public static List&lt;T&gt;(this List&lt;T&gt; l, T[] a, int n)
    {
        for (int i = 0; i &lt; n; i++)
           l.Add(a[i]);
    }
    ...

so the usage would be:

    List&lt;byte&gt; some_list = new List&lt;byte&gt;(my_byte_array,number_of_bytes);

I&#39;ve already added an AddRange extension method:

    public static void AddRange&lt;T&gt;(this List&lt;T&gt; l, T[] a, int n)
    {
       for (int i = 0; i &lt; n; i++)
           l.Add(a[i]);
    }

I want to do it as a constructor too. Is it possible? If yes - how?


Is it possible to create constructor-extension-method ? how?

In a thread, I create some `System.Threading.Task` and start each task.

When I do a `.Abort()` to kill the thread, the tasks are not aborted.

How can I transmit the `.Abort()` to my tasks ?

How do I abort/cancel TPL Tasks?

Any call in my unit tests to either `Debug.Write(line)` or `Console.Write(Line)` simply gets skipped over while debugging and the output is never printed. Calls to these functions from within classes I&#39;m using work fine. 

I understand that unit testing is meant to be automated, but I still would like to be able to output messages from a unit test.


How can I write output from a unit test?

Are there any elegant quick way to map object to a dictionary and vice versa?

### Example:

    IDictionary&lt;string,object&gt; a = new Dictionary&lt;string,object&gt;();
    a[&quot;Id&quot;]=1;
    a[&quot;Name&quot;]=&quot;Ahmad&quot;;
    // .....

becomes

    SomeClass b = new SomeClass();
    b.Id=1;
    b.Name=&quot;Ahmad&quot;;
    // ..........

Mapping object to dictionary and vice versa

*Does **reflection** in `C#` offer a way to determine if some given `System.Type` type models some interface?*

    public interface IMyInterface {}

    public class MyType : IMyInterface {}
    
    // should yield &#39;true&#39;
    typeof(MyType)./* ????? */MODELS_INTERFACE(IMyInterface);

How to determine if a type implements an interface with C# reflection

I&#39;m wondering how to convert a python &#39;type&#39; object into a string using python&#39;s reflective capabilities.

For example, I&#39;d like to print the type of an object

    print &quot;My type is &quot; + type(someObject) # (which obviously doesn&#39;t work like this)

Convert a python &#39;type&#39; object to a string

This is the class:

    class Foo {
      public void bar(int a, Object b) {
      }
    }

Now I&#39;m trying to get &quot;reflect&quot; this method from the class:

    Class c = Foo.class;
    Class[] types = { ... }; // what should be here?
    Method m = c.getMethod(&quot;bar&quot;, types);

How to use getMethod() with primitive types?

I have an enum where each member has a custom attribute applied to it. How can I retrieve the value stored in each attribute?

Right now I do this:

    var attributes = typeof ( EffectType ).GetCustomAttributes ( false );
    foreach ( object attribute in attributes )
    {
    	GPUShaderAttribute attr = ( GPUShaderAttribute ) attribute;
    	if ( attr != null )
    		return attr.GPUShader;
    }
    return 0;

Another issue is, if it&#39;s not found, what should I return? 0 is implcity convertible to any enum, right? That&#39;s why I returned that.

Forgot to mention, the above code returns 0 for every enum member.

How to get Custom Attribute values for enums?

If I have for example two classes `A` and `B`, such that class `B` inherits `A` as follows:

`class B: public A`

In this case, I&#39;m doing `public` inheritance.

If I write the previous code as follows:

`class B: A`

What type of inheritance will I be doing here (i.e; public)? In other words, what is the default access specifier?

Just a side question here. Do I call the previous line of codes `statements`? Especially that I remember I read in the *C++ Without Fear: A Beginner&#39;s Guide That Makes You Feel Smart* book that `statements` are that that end with `;`. What do you think about that?

Thanks.

Default inheritance access specifier

Can I define an abstract class without adding an abstract method?

Defining an abstract class without any abstract methods

I seem to be unable to use a base class as a function parameter, have I messed up my inheritance? 

I have the following in my main:

    int some_ftn(Foo *f) { /* some code */ };
    Bar b;
    some_ftn(&amp;b);

And the class Bar inheriting from Foo in such a way:

    class Bar : Foo
    {
    public:
    	Bar();
    	//snip
    	
    private:
    	//snip
    };

Should this not work?  I don&#39;t seem to be able to make that call in my main function



C++ inheritance - inaccessible base?

First of all... Sorry for this post. I know that there are many many posts on stackoverflow which are discussing multiple inheritance. But I already know that Java does not support multiple inheritance and I know that using interfaces should be an alternative. But I don&#39;t get it and see my dilemma:

I have to make changes on a very very large and complex tool written in Java. In this tool there is a data structure built with many different class objects with a linked member hierarchy. Anyway...

 - I have one class `Tagged` which has multiple methods and returns an object tag depending on the object&#39;s class. It needs members and static variables.
 - And a second class called `XMLElement` allows to link objects and in the end generate a XML file. I also need member and static variables here.
 - Finally, I have these many many data classes which nearly all should extend `XMLElement` and some of them `Tagged`.

Ok ok, this won&#39;t work since it&#39;s only possible to extend just one class. I read very often that everything with Java is ok and there is no need for having multiple inheritance. I believe, but I don&#39;t see how an interface should replace inheritance. 

 1. It makes no sense to put the real implementation in all data classes since it is the same every time but this would be necessary with interfaces (I think). 
 2.  I don&#39;t see how I could change one of my inheritance classes to an interface. I have variables in here and they have to be exactly there.

I really don&#39;t get it so please can somebody explain me how to handle this?

How can interfaces replace the need for multiple inheritance when have existing classes

I have a `List&lt;SubClass&gt;` that I want to treat as a `List&lt;BaseClass&gt;`.  It seems like it shouldn&#39;t be a problem since casting a `SubClass` to a `BaseClass` is a snap, but my compiler complains that the cast is impossible.

So, what&#39;s the best way to get a reference to the same objects as a `List&lt;BaseClass&gt;`?

Right now I&#39;m just making a new list and copying the old list:

    List&lt;BaseClass&gt; convertedList = new ArrayList&lt;BaseClass&gt;(listOfSubClass)

But as I understand it that has to create an entirely new list.  I&#39;d like a reference to the original list, if possible!

Content Type	Original Author	Original Content on Stackoverflow
Question	Xaqron	View Question on Stackoverflow
Solution 1 - C#	tvanfosson	View Answer on Stackoverflow
Solution 2 - C#	markg	View Answer on Stackoverflow
Solution 3 - C#	BFree	View Answer on Stackoverflow

How to find the child class name from base class?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Send additional data on socket connection

Merge PDF files with PHP

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