warn : bool -> string -> unit

SYNOPSIS

Prints out a warning string

DESCRIPTION

When applied to a boolean value b and a string s, the call warn b s prints out ``Warning: s'' and a following newline to the terminal if b is true and otherwise does nothing.

FAILURE CONDITIONS

Never fails.

EXAMPLE

  # let n = 7;;
  val n : int = 7
  # warn (n <> 0) "Nonzero value";;
  Warning: Nonzero value
  val it : unit = ()

SEE ALSO

remark, report.