Extracting Last N Words from Character Columns in R Using Regular Expressions and String Manipulation

Passing Column Name as Parameter to data.table::setkey() When Some Columns Are Not in the Data.Table: col_name

Update Values in a Data Table Using Join Operation

Understanding the Performance Difference Between lapply and Hardcoding in data.table: A Performance Comparison Guide

Understanding the Basics of data.table in R: Mastering the .() group by Syntax with `as.numeric()`

Creating New Column with Conditional Value by ID in R Using data.table Package

Improving Readability and Maintainability: A Revised Data Transformation Function in R

Zone Allocation Problem: A Practical Approach Using R's allocate Function

Unpacking and Rearranging Data in R: Exploring Alternative Approaches for Transforming Complex Data Formats

How to Calculate Mean Scores for Each Group and Class Using Pandas, List Comprehension, and Custom Functions