All,

I have following question.

1. Difference between Has-A and IS-A relationship ?

2. What is exact difference between IComarable and ICompare interface ?

silent ocean

Answers:

1. HAS-A/IS-A allows you to determine relationships between classes.

Example:
Let's say you have 2 classes, Car and Driver
the relationship between these two would be a HAS-A relationship.
a Car HAS-A Driver, a Driver HAS-A car
Now, without the Car the driver can still exist, he just doesn't have a
car. on the same note,  the car doesnt NEED a driver, it can exist
without having a driver.

So, a HAS-A relationship would be a relationship between the two
classes, usually you have a member variable in one or the other that
relates to the other class for access

on the flipside, lets look at a IS-A relationship, this denotes
Inheritance.

Example:
Let's say you have two classes, Shape and Circle.
a Circle IS-A Shape, which would show us that Shape would be our base
class, and Circle would be our derived class/inherited class. On a
sidenote, an IS-A relationship shows that one class CANNOT exist
without another.

way off base here.

Hello Deep,

DO> I have following question.
DO> 1. Difference between Has-A and IS-A relationship ?

http://en.wikipedia.org/wiki/Has-a
http://en.wikipedia.org/wiki/Is-a

DO> 2. What is exact difference between IComarable and ICompare
DO> interface ?

http://www.devcity.net/Articles/20/1/20020304.aspx
http://groups.google.com/group/microsoft.public.dotnet.languages.csharp/browse_frm/thread/3f823331fe1eb204/7233f94b303577f1?lnk=st&q=IComparable+Icomparer&rnum=1#7233f94b303577f1

---
WBR,
Michael  Nemtsev :: blog: http://spaces.msn.com/laflour

"At times one remains faithful to a cause only because its opponents do not
cease to be insipid." (c) Friedrich Nietzsche

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