A Collection of Efficient and Extremely Fast R Functions II R package Rfast2 version 0.1.5.6 A collection of fast statistical and utility functions for data analysis. Functions for regression, maximum likelihood, column-wise statistics and many more have been included. C++ has been utilized to speed up the functions. References: Tsagris M., Papadakis M. (2018). Taking R to its limits: 70+ tips. PeerJ Preprints 6:e26605v1 <doi:10.7287/peerj.preprints.26605v1>. Software Depends: R (>= 3.5.0), Rcpp (>= 0.12.3), RcppParallel Imports: Rfast, Rnanoflann LinkingTo: Rcpp (>= 0.12.3), RcppArmadillo, RcppParallel, zigg, Rfast, BH Manos Papadakis <rfastofficial@gmail.com> Comprehensive R Archive Network (CRAN) Manos Papadakis [aut, cre, cph], Michail Tsagris [aut], Stefanos Fafalios [aut], Marios Dimitriadis [aut], Manos Lasithiotakis [aut], Nikolaos Kontemeniotis [ctb] GPL (>= 2.0) 2026-03-07 application/tgz https://CRAN.R-project.org/package=Rfast2 doi:10.32614/CRAN.package.Rfast2