Pattern-Matching, Essay Example

Requirements

One of the most common uses of data structures is to provide an efficient mechanism for storing and consequently searching data collections. Strings are often the target for searches, and pattern matching is an important method for string searches. Pattern matching is required for many programs so support because this functionality has been built into popular programming languages. What follows is a design document for a company human resources project that requires searching of names including code and comments to demonstrate understanding of functionality.

Analysis

An Internet search for tools providing C# pattern matching has been conducted in preparation for pattern-matching functionality in the present search application. A summary of how pattern matching is supported in C# is reported identifying key elements and explaining their functions.

Code

A description  of the implementation required for pattern-matching functionality in the program, supported by C# source code examples, helps readers better understand the nuts and bolts of executing C# based pattern-matching. To use regular expressions to augment a pattern search, it is helpful use the following code in the first few lines of the document.

//Use regular expressions

Using System.Text.RegularExpressions;

This line prevents the programmer from having to declare namespaces throughout the document.Three C# examples demonstrate key parts of the implementation of a pattern-based search in C#. These examples are based on a name-based email search of the records in the human resources database. One of the applications with this particular pattern recognition model is that it could function as part of a validation code for a sign-up form. First, we define a new regular expression to use in the pattern match.