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What is the function of breakpoints?

Posted By : LEANORD     Posted Date :October 11, 2011    Points :40   Category :JavaScript/VBScript 
Allows debug the code.

You can also find related Interview Question to What is the function of breakpoints?  below: 

What is Method Overriding? How to override a function in C#?

Use the override modifier to modify a method, a property, an indexer, or an event. An override method provides a new implementation of a member inherited from a base class. The method overridden by an override declaration is known as the overridden base method. The overridden base method must have the same signature as the override method.
You cannot override a non-virtual or static method. The overridden base method must be virtual, abstract, or override. (More...)

Define precondition and post-condition to a member function.

A precondition is a condition that must be true on entry to a member function. A class is used correctly if preconditions are never false. An operation is not responsible for doing anything sensible if its precondition fails to hold.
For example, the interface invariants of stack class say nothing about pushing yet another element on a stack that is already full. We say that isful() is a precondition of the push operation.

A post-condition is a condition that must be true on exit from a member function if the precondition was valid on entry to that function. A class is implemented correctly if post-conditions are never false.
For example, after pushing an element on the stack, we know that isempty() must necessarily hold. This is a post-condition of the push operation. (More...)

Difference between a sub and a function.

A Sub Procedure is a method will not return a value
-A sub procedure will be defined with a "Sub" keyword
Sub ShowName(ByVal myName As String)
Console.WriteLine("My name is: " & myName)
End Sub
-A function is a method that will return value(s).
-A function will be defined with a "Function" keyword
Function FindSum(ByVal num1 As Integer, ByVal num2 As Integer) As Integer
Dim sum As Integer = num1 + num2
Return sum
End Function (More...)

Explain Virtual Function in C#.

Virtual functions implement the concept of polymorphism are the same as in C#, except that you use the override keyword with the virtual function implementaion in the child class.

The parent class uses the same virtual keyword. Every class that overrides the virtual method will use the override keyword.

class Shape{
public virtual void Draw()
{ Console.WriteLine("Shape.Draw") ; }
class Rectangle : Shape{
public override void Draw()
{ Console.WriteLine("Rectangle.Draw"); }
} (More...)

Can I call a Win32 API function from a C# program?

Yes, you can.The .NET Framework provides a set of services called Platform Invoke, also known as PInvoke. Refer to the .NET Framework documentation for examples of using PInvoke services. (More...)

How is body onload() function is different from document.ready() function used in jQuery?

Document.ready() function is different from body onload() function because off 2 reasons.

1. We can have more than one document.ready() function in a page where we can have only one onload function.
2. Document.ready() function is called as soon as DOM is loaded where body.onload() function is called when everything gets loaded on the page that includes DOM, images and all associated resources of the page. (More...)

Suppose you want a certain ASP.NET function executed on MouseOver for a certain button. Where do you add an event handler?

Add an OnMouseOver attribute to the button. Example: btnSubmit.Attributes.Add("onmouseover","someClientCodeHere();"); (More...)

How do you directly call a native function exported from a DLL?

public static extern int MessageBoxA(int h, string m, string c, int type); (More...)

What are valid signatures for the Main function?

public static void Main ();
public static int Main ();
public static void Main ( string[] args );
public static int Main (string[] args ); (More...)

What is the use of COALESCE function in SQL Server ?

Returns the first not null expression among its arguments.

If X is Null then It'll check for Y,
If Y is Null It'll Check for Z.

Let X is NULL, Y='5' and Z='9'
Here Output is : Y (More...)

MONTHS_BETWEEN date function is used for what purpose?

MONTHS_BETWEEN is used to find the difference between two dates. (More...)

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