hi. here is a session in irb: irb(main):001:0> 10.power!(200) NoMethodError: undefined method `power!' for 10:Fixnum from (irb):1 irb(main):002:0> help Fixnum => nil irb(main):003:0> 10.power!(200) => 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 irb(main):004:0> quit so a call to help Fixnum makes the power! method to be available ? i use slackare 10.2 with a self-made package of ruby 1.8.4 compiled with CFLAGS="-O2 -march=$arch -mcpu=i686" \ CXXFLAGS="-O2 -march=$arch -mcpu=i686"\ ./configure --prefix=/usr --enable-shared make make install DESTDIR=$pkg make install-doc DESTDIR=$pkg on an Athlon XP 1800+ # note: not all people on #ruby-lang on irc.freenode.net got that error
on 2006-04-09 17:22
on 2006-04-09 17:28
I just tried this on Osx and got the same result! Keith
on 2006-04-09 17:31
Hi, You probably saw my reply on IRC but for others... 2006/4/9, solsTiCe d'Hiver <firstname.lastname@example.org>: > hi. > > here is a session in irb: > irb(main):001:0> 10.power!(200) > NoMethodError: undefined method `power!' for 10:Fixnum > from (irb):1 > irb(main):002:0> help Fixnum > => nil This is actually a valid call. To see what help is from try: method :help You might get something like: #<Method: Object(IRB::ExtendCommandBundle)#help> The part in () tells us that it is from IRB... a quick check shows that a trail is started that eventually leads to: require 'mathn' That file in turn, does something like: alias power! ** The reason not all people got the error is because some were probably loading other code at startup or before testing. Rubygems is an example of this. Moral of the story is to be away of what your ruby environment automatically brings in. Brian.
on 2006-04-09 17:44
Hi, At Sun, 9 Apr 2006 22:19:23 +0900, solsTiCe d'Hiver wrote in [ruby-talk:188278]: > here is a session in irb: > irb(main):001:0> 10.power!(200) > NoMethodError: undefined method `power!' for 10:Fixnum > from (irb):1 power! is for internal use only. Do not use.
on 2006-04-09 20:45
----- Original Message ----- From: "solsTiCe d'Hiver" <email@example.com> To: "ruby-talk ML" <firstname.lastname@example.org> Sent: Sunday, April 09, 2006 9:19 AM Subject: [ruby 1.8.4] bug: power! does not work then works in irb > 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 > irb(main):004:0> quit > > so a call to help Fixnum makes the power! method to be available ? > I get the same behavior .. using ruby on Windows XP ... the binary distribution