# No progress bar
l_ply(1:100, identity, .progress = "none")
# Use the Tcl/Tk interface
l_ply(1:100, identity, .progress = "tk")
# Text-based progress (|======|)
l_ply(1:100, identity, .progress = "text")
# Choose a progress character, run a length of time you can see
l_ply(1:10000, identity, .progress = progress_text(char = "."))
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