Feedback.WARNING

STRUCTURE

SYNOPSIS

Controlling output stream used when printing HOL_WARNING

DESCRIPTION

The value of reference cell WARNING_outstream controls where HOL_WARNING prints its argument.

The default value of WARNING_outstream is TextIO.stdOut.

EXAMPLE

- val ostrm = TextIO.openOut "foo";
> val ostrm = <outstream> : outstream

- WARNING_outstream := ostrm;
> val it = () : unit

- HOL_WARNING "Module" "Function" "Sufferin' Succotash!";
> val it = () : unit

- TextIO.closeOut ostrm;
> val it = () : unit

- val istrm = TextIO.openIn "foo";
> val istrm = <instream> : instream

- print (TextIO.inputAll istrm);
<<HOL warning: Module.Function: Sufferin' Succotash!>>

SEEALSO

Feedback, HOL_WARNING, ERR_outstream, MESG_outstream, emit_WARNING