README.md

In tyluRp/loopviz: Visualize Nested For Loops

loopviz

Visualize nested for loops. Inspiration from Programming Loops vs Recursion a youtube video by Computerphile.

Installation

You can install loopviz from GitHub with:

# install.packages("devtools")
devtools::install_github("tylurp/loopviz")

Example

To plot a nested for loop, provide some numbers to loopviz. Each number represents the number of iterations. The order represents the hierarchy, i.e. the first number is the top level loop, the second is the first nested loop and so on. For example:

library(loopviz)

loopviz(2, 3)

Above we have a for loop which iterates 2 times. Inside that loop there is a nested loop which iterates 3 times. The code would look something like:

for (i in 1:2) {
  for (j in 1:3)
    print (j)
}
#> [1] 1
#> [1] 2
#> [1] 3
#> [1] 1
#> [1] 2
#> [1] 3

You can let loopviz do the translating with translate = TRUE:

loopviz(2, 3, translate = TRUE)
#> for (i in 1:2) {
#>   for (j in 1:3)
#>     print (j)
#> }

Animating loops is also possible thanks to gifski:

loopviz(2, 3, animate = TRUE)

tyluRp/loopviz documentation built on Nov. 5, 2019, 11:02 a.m.