Snippets

### How to silence the output produced by other tools?

Jasmin Blanchette wrote: When writing Nitpick, I found the need to silence the other tools upon which Nitpick relies, because their output interfered in bad ways with Nitpick's own output. So I used code like the following:
(* (string -> unit) ref -> ('a -> 'b) -> 'a -> 'b *) fun silence_one out_fn f x = let val old_out_fn = !out_fn val _ = out_fn := K () val y = f x val _ = out_fn := old_out_fn in y end (* ('a -> 'b) -> 'a -> 'b *) fun silence f = fold silence_one [Output.writeln_fn, Output.priority_fn, Output.tracing_fn, Output.warning_fn, Output.error_fn, Output.debug_fn, Output.prompt_fn, Output.status_fn] f

Last modified: Thu May 21 21:43:15 CEST 2009 [Validate this page.]