File.copy-exclamation-mark
You're seeing just the function
copy-exclamation-mark
, go back to File module for more information.
Specs
copy!(Path.t() | io_device(), Path.t() | io_device(), pos_integer() | :infinity) :: non_neg_integer()
The same as copy/3
but raises a File.CopyError
exception if it fails.
Returns the bytes_copied
otherwise.