# How to ignore warning **URL:** \ **Category:** Ruby\ **Created:** [October 11, 2007, 5:08am UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918 "2007-10-11T05:08:31Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 11, 2007, 5:08am UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/1 "2007-10-11T05:08:31Z")
how to ignore warning messages in ruby (when executing ruby code) ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 11, 2007, 5:28am UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/2 "2007-10-11T05:28:17Z")
Quoth Pokkai D.: > how to ignore warning messages in ruby (when executing ruby code) Close your eyes and tap your heels thrice. No, really, ignoring things is as easy as not looking at them. (In all likelihood you should fix your code to not have warnings instead.) Regards, ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 11, 2007, 5:49am UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/3 "2007-10-11T05:49:22Z")
On 11 Oct 2007, at 12:26, Konrad M. wrote: > Quoth Pokkai D.: > > > how to ignore warning messages in ruby (when executing ruby code) > > Close your eyes and tap your heels thrice. > No, really, ignoring things is as easy as not looking at them. (In all > likelihood you should fix your code to not have warnings instead.) I agree with Konrad that you should probably fix warnings rather than ignore, but -W is the command line flag you want. -W1 is standard, - W2 is verbose, -W0 is no warnings whatsoever. Alex G. Bioinformatics Center Kyoto University ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 11, 2007, 6:28am UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/4 "2007-10-11T06:28:58Z")
Alex G. wrote: > I agree with Konrad that you should probably fix warnings rather than > ignore, but -W is the command line flag you want. -W1 is standard, - > W2 is verbose, -W0 is no warnings whatsoever. > > Alex G. > > Bioinformatics Center > Kyoto University thank you Alex ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 11, 2007, 12:25pm UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/5 "2007-10-11T12:25:54Z")
Hi, Am Donnerstag, 11. Okt 2007, 12:48:22 +0900 schrieb Alex G.: > -W1 is standard, -W2 is > verbose, -W0 is no warnings whatsoever. Or set one of the variables $-v, $-w, $VERBOSE to ‘nil’. Option $-v -W0 nil -W1 false -W2 true Bertram ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 11, 2007, 12:22pm UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/6 "2007-10-11T12:22:28Z")
Alex G. wrote: > -W is the command line flag you want. -W1 is standard, - > W2 is verbose, -W0 is no warnings whatsoever. Is there a possibility to ignore warnings dynamically? - I mean, sometimes it’s helpful to redefine constants, which will always produce a warning. I want to suppress warnings for these lines only. Wolfgang Nádasi-Donner ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 11, 2007, 2:55pm UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/7 "2007-10-11T14:55:21Z")
Bertram S. wrote: > irb(main):001:0\> X = “x” > =\> “x” > irb(main):002:0\> class Object ; remove\_const :X ; end > =\> “x” > irb(main):003:0\> X > NameError: uninitialized constant X > from (irb):3 > irb(main):004:0\> X = “y” > =\> “y” > irb(main):005:0\> Well - it looks fine, because it’s no dirty trick. Wolfgang Nádasi-Donner ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 11, 2007, 1:52pm UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/8 "2007-10-11T13:52:22Z")
Hi, Am Donnerstag, 11. Okt 2007, 19:22:31 +0900 schrieb Wolfgang Nádasi-Donner: > Alex G. wrote: > > > -W is the command line flag you want. -W1 is standard, - > > W2 is verbose, -W0 is no warnings whatsoever. > > Is there a possibility to ignore warnings dynamically? - I mean, > sometimes it’s helpful to redefine constants, which will always produce > a warning. I want to suppress warnings for these lines only. irb(main):001:0\> X = “x” =\> “x” irb(main):002:0\> class Object ; remove\_const :X ; end =\> “x” irb(main):003:0\> X NameError: uninitialized constant X from (irb):3 irb(main):004:0\> X = “y” =\> “y” irb(main):005:0\> Bertram ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 11, 2007, 3:06pm UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/9 "2007-10-11T15:06:57Z")
On 10/10/07, Konrad M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Quoth Pokkai D.: > > > how to ignore warning messages in ruby (when executing ruby code) > > Close your eyes and tap your heels thrice. > No, really, ignoring things is as easy as not looking at them. Or cover your head with your towel, rubyists should ALWAYS have their towel handy. ## And as the Hitchhiker’s Guide to Ruby explains this is also the best defense against being eaten by the ravenous bugblatter beast of Traal! Rick DeNatale My blog on Ruby [http://talklikeaduck.denhaven2.com/](http://talklikeaduck.denhaven2.com/) ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 16, 2007, 2:08pm UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/10 "2007-10-16T14:08:42Z")
Bertram S. wrote: > irb(main):001:0\> X = “x” > =\> “x” > irb(main):002:0\> class Object ; remove\_const :X ; end > =\> “x” > irb(main):003:0\> X > NameError: uninitialized constant X > from (irb):3 > irb(main):004:0\> X = “y” > =\> “y” > irb(main):005:0\> Yuck. I’ve pushed for structured warnings in the past, but it has fallen on deaf ears. See: > **[OSDIR](https://osdir.com)** > > edit post Gaming How To Check If US iGaming Platform is Safe July 13, 2021 edit post Gaming What made > **[OSDIR](https://osdir.com)** > > edit post Gaming How To Check If US iGaming Platform is Safe July 13, 2021 edit post Gaming What made [http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/50105](http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/50105) Regards, Dan ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [November 19, 2009, 10:37pm UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/11 "2009-11-19T22:37:35Z")
Konrad M. wrote: > Quoth Pokkai D.: > > > how to ignore warning messages in ruby (when executing ruby code) > > Close your eyes and tap your heels thrice. > No, really, ignoring things is as easy as not looking at them. (In all > likelihood you should fix your code to not have warnings instead.) > > Regards, Ruby will spit out warnings for white space - with no coding errors, and many programming languages output warnings for using anything but the most basic techniques so weather you’re a novice or a seasoned veteran there are valid reasons to suppress warnings: after all, it does have W levels ---
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [October 16, 2007, 2:57pm UTC](https://www.ruby-forum.com/t/how-to-ignore-warning/116918/12 "2007-10-16T14:57:53Z")
Rick Denatale wrote: > Or cover your head with your towel, rubyists should ALWAYS have their > towel handy. > > ## And as the Hitchhiker’s Guide to Ruby explains this is also the best defense against being eaten by the ravenous bugblatter beast of Traal! > > Rick DeNatale > > My blog on Ruby > [http://talklikeaduck.denhaven2.com/](http://talklikeaduck.denhaven2.com/) likin’ it 🙂