Regexpõhised

Regexpõhised (also known as regular expression based functions) are programming functions that operate on strings, using patterns to match and manipulate data. These functions are commonly used in text processing and are found in many programming languages.

A regexpõhised function takes a string and a pattern as input, and returns a match or list of matches based on the pattern. The pattern is typically a sequence of characters that define what to look for in the string. Patterns can be simple, such as searching for a specific word or sequence of characters, or complex, incorporating special characters and rules to match specific formats.

In formal terms, a regexpõhised function is a function that takes a string and a regular expression as input, and returns a match array or a match object as output. Regular expressions, or regexps, are a family of string matching algorithms that use patterns to match data.

Regexpõhised functions are used for a variety of tasks, including text search and replace, string validation, and data extraction. They are also used in many tools and applications for tasks such as log file analysis and data processing.

The use of regexpõhised functions in programming can greatly speed up text processing tasks, as they allow for efficient and accurate matching of patterns in strings. However, regexpõhised functions can be difficult to read and write, especially for complex patterns.

Regexpõhised functions are also the basis for more advanced functionality, such as conditional patterns, group matching, and escaping special characters. These advanced features allow programmers to implement complex text processing tasks with ease.