Extension method: Difference between revisions

Revision as of 08:13, 25 September 2007

Revision as of 08:14, 25 September 2007

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As an example, consider a need of extending the string class with a new reverse method whose return value is a string with the characters in reversed order. Because the string class is a primitive type, the method would typically be added to a new utility class in a manner similar to the following:

<source lang="csharp">

string x = "some string value";

string yx = Utility.Reverse(x)"some string value";

string y = Utility.Reverse(x);

</source>

This may, however, become increasingly difficult to navigate as the library of utility methods and classes increases, particularly for newcomers. The ___location is also less intuitive because, unlike most string methods, it would not be a member of the string class, but in a completely different class altogether. A better syntax would therefore be the following:

<source lang="csharp">

string x = "some string value";

string yx = x.Reverse()"some string value";

string y = x.Reverse();

</source>

==Extension methods==