Skip to main content

C# 4.0-an Intoduction

C# 4.0-an Intoduction

.Net Framework 4.0 is the buzzword currently.
In this section I'll provide some useful links to get you started with C# 4.0 and try to explore the following new introductions in C# 4.0

  • Biginteger
  • Complex
  • Optional parameters
  • Named parameters

.Net Framwork 4.0 has introduced two new types:
1.Biginteger
2.Complex
Biginteger

BigInteger Example:

BigInteger p = UInt64.MaxValue;
BigInteger q = UInt64.MaxValue;

BigInteger r = p * q;

BigInteger is immutable(as is the string in C#)
For Eamplew:
BigInteger p = 1;
p++;
will result in the creation of a second BigInteger object, assigning it back to a.


BigInteger has many static methods, such as the typical Parse(), TryParse(), and
ToString() methods (which support hex format as well) found in other integer types,
as well as mathematical helpers such as Pow(), Log(), Log10(), and others.

Complex

Newly added class(System.Numerics.Complex)can be used to represent imaginary numbers.
Complex wraps both the real and imaginary parts using doubles as the underlying
format.
For Example:

Complex a = new Complex(2, 1);
Complex b = new Complex(3, 2);


Optional parameters and Named parameters.


Optional parameters existed in VB.Net for long (so far as i know), however these were missing from C#.

The only option available for C# developers(and many a times really frustrating) was to use Overloading (change the number or

sequence or type of paramters).

However with .net framework 4.0(C# 4.0), it is now possible to use parameters as optional

Below written example will put some light in this context.

consider  a function that takes three paramteres

private string SomeMethod(string firstname, string lastname= "TestLAstName", int age = 10)
{
return firstname + " " + lastname;
}

The second and third parameters, lastname & age, both have default values. The only parameter required is firstname.

The method can be called as

string name = null;
name = SomeMethod("TestName");

That will return TestName TestLAstName.

OR the Method can be called as

string name = null;
name = SomeMethod("Pradeep", "Patel");

The value returned is Pradeep Patel.

When age need to passed try as following (Named Paramter)

string name = null;
name = SomeMethod("Suprotim", age: 20);


The above mentioned additions in C# 4.0 are real good additions that will definitely make the programming more fun.

Hope this was helpful!
Till next time we connect Happy Coding.

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

Asp.Net 4.0: An Overview-Part-III

This is the last post in the series which will explore the following new features of ASP.Net 4.0  Performance Monitoring for Individual Applications in a Single Worker Process Web.config File Refactoring Permanently Redirecting a Page Expanding the Range of Allowable URLs Performance Monitoring for Individual Applications in a Single Worker Process It is a common practice to host multiple ASP.NET applications in a single worker process, In order to increase the number of Web sites that can be hosted on a single server. This practice results in difficulties for server administrators to identify an individual application that is experiencing problems. ASP.NET 4 introduces new resource-monitoring functionality introduced by the CLR. To enable this functionality, following XML configuration snippet is added to the aspnet.config configuration file.(This file is located in the directory where the .NET Framework is installed ) <?xml version="1.0" encoding="UTF-8...
Post a Comment
Read more

Covariance and Contravariance-General Discussion

If you have just started the exploration of .Net Framework 4.0, two terms namely Covariance and Contravariance might have been heard. The concept that these terms encapsulate are used by most developer almost daily, however there has never been any botheration about the terminologies. Now, what actually these terms mean and how are these going to affect us as a developer, if we dive in to the details. The simple answer is it’s always good to know your tools before actually using them. Enough philosophy, let’s get to the business. Starting the discussion let me reiterate that in addition to Covariance and Contravariance, there is another terminology, Invariance. I’ll by start here by diving into the details of Invariance and then proceed further. Invariance: Invariance can be better understood by considering the types in .Net.>net has basically two type, value-types and reference-types. Value types (int, double etc) are invariant i.e. the types can’t be interchanged either ...
1 comment
Read more

WCF-REST Services-Part-I

What is REST? REST stands for Representational State Transfer. REST as described in MSDN, “is an architectural style that can be used to build software in which clients (user agents) can make requests of services (endpoints)”. REST is one way to implement a client-server architectural style. A service that uses the architectural style of REST is generally referred to as a RESTful service or endpoint. RESTful endpoint Building Blocks 1. Resources(What resources would the service Serve/Offer) 2. URI(Identifiers used to represent the resources) 3. HTTP Verbs (What parts of the uniform interface (HTTP verbs) are each URI going to support, like Get/Post etc.) I’ll develop a hypothetical system that will make use of these blocks in the next article, let us consider the theoretical aspects of the REST in this post. Why REST? As explained above, REST internally implements a Client/Server model that can be easily achieved by using SOAP with ASMX or WCF. Just for the discussion sake ...
Post a Comment
Read more