Parallelizing for Loops with plyr and the doMC Package

Merging Multiple DataFrames by a Common Column Using bind_rows and pivot_wider in R

Selecting Certain Observations Plus Before and After Dates Using R

Improving Code Quality: A Detailed Review of a C++-Style R Function for Rolling Window Calculation

Simplifying Statistical Functions Across Large Number of Columns in R: 3 Alternative Approaches

Smart Transpose of a Data Frame in R Using Tidyr Library

Split Apply Recombine with Plyr and Data.table in R: A Performance Comparison