Using Regex to Collapse Spaces in Strings with gsub Function in R for Data Cleaning and Preprocessing.

Removing Prefixes from DataFrame Columns Using Regular Expressions in R

Detecting and Handling Non-Numeric Values in DataFrames: A Comprehensive Guide

Understanding R's Regex Pattern Matching with Shorthand Character Classes Inside Character Classes for Accurate String Manipulation.

Removing Punctuation Except Apostrophes from Text in R Using Regular Expressions