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R is an open source programming language created in 1993 by Ross Ihaka and Robert Gentleman.

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R is an open source programming language and software environment for statistical computing and graphics that is 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, surveys of data miners, and studies of scholarly literature databases show that R's popularity has increased substantially in recent years. Read more on Wikipedia...

Example from Riju:
print("Hello, world!")
Example from hello-world:
cat("Hello World")
# Hello World in R cat("Hello world\n")
Example from Linguist:
hello <- function() { print("hello, world!") } hello()
Example from Wikipedia:
install.packages("caTools") # install external package library(caTools) # external package providing write.gif function jet.colors <- colorRampPalette(c("#00007F", "blue", "#007FFF", "cyan", "#7FFF7F", "yellow", "#FF7F00", "red", "#7F0000")) dx <- 400 # define width dy <- 400 # define height C <- complex( real=rep(seq(-2.2, 1.0, length.out=dx), each=dy ), imag=rep(seq(-1.2, 1.2, length.out=dy), dx ) ) C <- matrix(C,dy,dx) # reshape as square matrix of complex numbers Z <- 0 # initialize Z to zero X <- array(0, c(dy,dx,20)) # initialize output 3D array for (k in 1:20) { # loop with 20 iterations Z <- Z^2+C # the central difference equation X[,,k] <- exp(-abs(Z)) # capture results } write.gif(X, "Mandelbrot.gif", col=jet.colors, delay=100)
if else repeat while function for in next break TRUE FALSE NULL Inf NaN NA NA_integer_ NA_real_ NA_complex_ NA_character_ ...

Language features

Feature Supported Token Example
Conditionals โœ“
Functions โœ“
While Loops โœ“
Booleans โœ“ TRUE FALSE
Assignment โœ“ =
Print() Debugging โœ“ print
Line Comments โœ“ #
# A comment
Pipes โœ“
# R has pipes via a library like dplyr
starwars %>% filter(species == "Droid")
Operator Overloading โœ“
Lazy Evaluation โœ“
File Imports โœ“
Comments โœ“
# A comment
Bitwise Operators โœ“
! x
x & y
x && y
x | y
x || y
xor(x, y)
Strings โœ“ "
"hello world"
Case Insensitive Identifiers X
Semantic Indentation X
Zero-based numbering X
MultiLine Comments X

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- Build the next great programming language ยท About ยท Acknowledgements ยท Published by Breck's Lab