Progress bar for parallel operations — progress

A wrapper around parallel::mclapply() or parallel::parLapply() that shows a progress bar. This function provides visual feedback for parallel processing operations.

Usage

progress_parallel(
  X,
  FUN,
  ...,
  .mc.cores = getOption("mc.cores", 2L),
  .format = "{bar} {percent} {eta}",
  .style = "modern",
  .method = c("fork", "psock")
)

Arguments

X: A vector or list to iterate over
FUN: Function to apply to each element
...: Additional arguments passed to FUN
.mc.cores: Number of cores to use (Unix-like systems only)
.format: Format string for the progress bar
.style: Visual style of the progress bar
.method: Method to use: "fork" (Unix) or "psock" (Windows/Unix)

Value

A list of results from applying FUN to each element of X

Examples

if (FALSE) { # \dontrun{
# Parallel processing with progress (Unix-like systems)
results <- progress_parallel(
  1:100,
  function(x) {
    Sys.sleep(0.1)
    x^2
  },
  .mc.cores = 4,
  .format = "{spin} {bar} {percent} | {current}/{total}",
  .style = "modern"
)

# Works on all platforms with PSOCK method
results <- progress_parallel(
  large_dataset,
  expensive_function,
  .method = "psock",
  .mc.cores = 4,
  .style = "elegant"
)
} # }