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Reverse arguments

Download: reverse.f

The following program produces a reversed copy of its command line arguments, enclosed in starting and ending delimiters.

 # reverse command line arguments

 banner(s) = "--- start ---" ++ nl ++ s ++ nl ++ "--- end ---"

 combine(argv) = concat(intersperse(" ", argv))

 rev = banner * reverse * combine * tail

 main(_, argv) = (rev)(argv)

< State transformer monad | Examples | Associative array >