Enhancement: would it be possible to add lock() (and possibly other methods) to DevNullStream?

[sbromberger]

julia> println(DevNull,"foo")
ERROR: type DevNullStream has no field lock
 in println at stream.jl:226

(I'm looking for a system-independent way to throw away println output. Am I doing it the right way?)

[vtjnash]

sgtm

[hayd]

+1.

FWIW I've also seen ERROR: LoadError: type DevNullStream has no field handle. From comments elsewhere (not sure where!) I used plain redirect_stdout:

old_stdout = STDOUT
redirect_stdout()
try
    do_stuff
finally
   redirect_stdout(old_stdout)
end

Similar functions are available for stderr and stdin.

For anyone arriving here from google... or github search.

[JeffBezanson]

@vtjnash close?

[vtjnash]

I don't think I added enough of the methods to get this complete. someone should be able to clone the complete set of methods added to AbstractPipe over to DevNullStream to get full coverage and close this issue.

[tkelman]

fixed by #12839, right?

[vtjnash]

mostly, although perhaps not entirely

[sbromberger]

Actually, I'm just getting back to this and it's not doing what I had hoped:

julia> redirect_stdout(DevNull)
ERROR: MethodError: no method matching redirect_stdout(::Base.DevNullStream)
Closest candidates are:
  redirect_stdout() at stream.jl:1034
  redirect_stdout(::Union{Base.LibuvStream, IOStream}) at stream.jl:1028
  redirect_stdout(::Function, ::Any) at stream.jl:1082

Time for a new issue/request?

[StefanKarpinski]

Yes, please – seems like a more specific issue.