[Answer] r_________

Answer: to wash sth. in clean water so as to take away soap
r_________
R is a programming language and free software environment for statistical computing and graphics supported by the R Foundation for Statistical Computing. The R language is widely used among statisticians and data miners for developing statistical software and data analysis. Polls data mining surveys and studies of scholarly literature databases show substantial increases in po…
R is a programming language and free software environment for statistical computing and graphics supported by the R Foundation for Statistical Computing. The R language is widely used among statisticians and data miners for developing statistical software and data analysis. Polls data mining surveys and studies of scholarly literature databases show substantial increases in popularity; as of January 2021 R ranks 9th in the TIOBE index a measure of popularity of programming languages. The official R software environment is a GNU package. It is written primarily in C Fortran and R itself (thus it is partially self-hosting) and is freely available under the GNU General Public License. Pre-compiled executables are provided for various operating systems. Although R has a command line interface there are several third-party graphical user interfaces such as RStudio an integrated development environment and Jupyter a notebook interface.
R is an implementation of the S programming language combined with lexical scoping semantics inspired by Scheme . S was created by John Chambers in 1976 while at Bell Labs . A commercial version of S was offered as S-PLUS starting in 1988.
R is an implementation of the S programming language combined with lexical scoping semantics inspired by Scheme . S was created by John Chambers in 1976 while at Bell Labs . A commercial version of S was offered as S-PLUS starting in 1988. Much of the code written for S-PLUS runs unaltered in R. In 1991 Ross Ihaka and Robert Gentleman at the University of Auckland New Zealand began an alternative implementation of the basic S language completely independent of S-PLUS . They publicized this project starting in 1993. In 1995 Martin Maechler convinced Ihaka and Gentleman to make R free and open-source software under the GNU General Public License . The R Development Core Team was created to manage the further development of R. John Chambers became a member…

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