Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

.net supports hash mapping

Posted on 2009-07-13
4
Medium Priority
?
207 Views
Last Modified: 2013-11-08
HI


What is hash mapping? Does .net supports hash mapping.
0
Comment
Question by:KaranGupta
  • 3
4 Comments
 
LVL 53

Expert Comment

by:Dhaest
ID: 24838641
Both provide key-value access to data. The Hashtable is one of the original collection classes in Java. HashMap is part of the new Collections Framework, added with Java 2, v1.2. The key difference between the two is that access to the  Hashtable is synchronized on the table while access to the
HashMap isn't. You can add it, but it isn't there by  default.

Another difference is that iterator in the HashMap is fail-safe while the enumerator for the Hashtable isn't. If you change the map while iterating, you'll know.

And, a third difference is that HashMap permits null values in it, while Hashtable doesn't.

Source: http://www.allinterview.com/showanswers/67679.html
0
 
LVL 53

Accepted Solution

by:
Dhaest earned 2000 total points
ID: 24838649
Hashtable Class

Represents a collection of key/value pairs that are organized based on the hash code of the key.

http://msdn.microsoft.com/en-us/library/system.collections.hashtable.aspx
0
 

Author Comment

by:KaranGupta
ID: 24838660
So you mean hash mapping is key/ value pair
0
 
LVL 53

Expert Comment

by:Dhaest
ID: 24838670
That's correct
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
Hello there! As a developer I have modified and refactored the unit tests which was written by fellow developers in the past. On the course, I have gone through various misconceptions and technical challenges when it comes to implementation. I would…
This lesson discusses how to use a Mainform + Subforms in Microsoft Access to find and enter data for payments on orders. The sample data comes from a custom shop that builds and sells movable storage structures that are delivered to your property. …
Look below the covers at a subform control , and the form that is inside it. Explore properties and see how easy it is to aggregate, get statistics, and synchronize results for your data. A Microsoft Access subform is used to show relevant calcul…
Suggested Courses

824 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question