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Running R in Zerethon IDE

What Run does with your script, the time limit, input, tests, and what a run cannot do.

Runs in Zerethon IDE · R 4.5 Official R documentation ↗
  • Run (Ctrl/⌘+Enter) runs the entry file — main.R by default — with Rscript --vanilla (R 4.5): no profile, no saved workspace, a fresh session every time. Make another file the entry with the ▶ button next to it in the explorer.
  • Output, warnings and errors appear in the Output tab; what you type in the Input tab is the script's standard input.
  • A run is stopped after 15 seconds (R itself needs about 2 seconds to start). Memory is limited, there is no network, and the project files are read-only (write to /tmp).
  • Run tests (Ctrl/⌘+Shift+Enter) runs every file named test_*.R, each in its own R session. A test file passes when it finishes without an error, so a failing stopifnot() fails it.
test_geometry.R 
source("geometry.R")

stopifnot(area(2, 3) == 6, area(0, 5) == 0)
cat("geometry ok\n")
A test for geometry.R from “Several files and packages”.

Tip: The editor highlights R and completes keywords and common functions. There is no formatter or live error checking yet: Run shows R's own messages.

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