ruby-fann gem doesn't work on 3.2.0/Ubuntu 22.04 about ruby-fann HOT 7 CLOSED

Fixed

from ruby-fann.

I also have practically the same problem, however I have Ruby 3.1.3 (on Windows 11)
To replicate:
-Run gem install ruby-fann in the working dir terminal
-Make a .rb file, and require 'ruby-fann', run it and you get this error:

<internal:C:/Ruby31-x64/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:88:in `require': cannot load such file -- ruby_fann/ruby_fann (LoadError)
        from <internal:C:/Ruby31-x64/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:88:in `require'
        from C:/Ruby31-x64/lib/ruby/gems/3.1.0/gems/ruby-fann-1.3.2/lib/ruby_fann.rb:2:in `<top (required)>'
        from <internal:C:/Ruby31-x64/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:88:in `require'
        from <internal:C:/Ruby31-x64/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:88:in `require'
        from C:/Ruby31-x64/lib/ruby/gems/3.1.0/gems/ruby-fann-1.3.2/lib/ruby-fann.rb:1:in `<top (required)>'
        from <internal:C:/Ruby31-x64/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:162:in `require'
        from <internal:C:/Ruby31-x64/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:162:in `rescue in require'
        from <internal:C:/Ruby31-x64/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:152:in `require'
        from neural-net.rb:1:in `<main>'
<internal:C:/Ruby31-x64/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:88:in `require': cannot load such file -- ruby-fann (LoadError)
        from <internal:C:/Ruby31-x64/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:88:in `require'
        from neural-net.rb:1:in `<main>'

I'm literally new to Ruby as I just installed it yesterday, and was following a guide, when running I run into this error, although my conclusion would be that perhaps the gem isn't compatible with the Ruby version? Not sure, again I'm on 3.1.3, any help would be appreciated!

from ruby-fann.

Probably a similar problem with ruby 3.2 on openSUSE Tumbleweed. Any ideas?

from ruby-fann.

Same issue here.
Ruby: 3.2.1

<internal:C:/Apps/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:88:in `require': cannot load such file -- ruby_fann/ruby_fann (LoadError)

from ruby-fann.

I am Windows user and have same issue too.
I moved the "ruby-fann.rb" and "ruby_fann.rb" files from the "ruby-fann-1.3.2\lib" directory to "ruby-fann-1.3.2\lib\ruby_fann". Afterwards, I wrote like this

$LOAD_PATH.unshift("D:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/ruby-fann-1.3.2/lib/ruby_fann")
require 'ruby-fann'

Then I ran the training example provided on https://tangledpath.github.io/ruby-fann/index.html, and it worked without issue. Ruby was able to successfully load both files.

However, a new error has since arisen. The following information pertains to this error:

n.rb:3:in `<main>': uninitialized constant RubyFann::TrainData (NameError)

  train = RubyFann::TrainData.new(:inputs=>[[0.3, 0.4, 0.5], [0.1, 0.2, 0.3]], :desired_outputs=>[[0.7], [0.8]])

from ruby-fann.

Hello,

The problem is still here for me. How can i fix it? Any help.
My ruby version is 3.2.1 the gem file version 1.3.2.

The error:
internal:/home/ustuntas/.rbenv/versions/3.2.1/lib/ruby/site_ruby/3.2.0/rubygems/core_ext/kernel_require.rb:85:in require': cannot load such file -- ruby_fann/ruby_fann (LoadError) from <internal:/home/ustuntas/.rbenv/versions/3.2.1/lib/ruby/site_ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:85:in require'
from /home/ustuntas/.gem/ruby/3.2.0/gems/ruby-fann-1.3.2/lib/ruby_fann.rb:2:in <top (required)>' from <internal:/home/ustuntas/.rbenv/versions/3.2.1/lib/ruby/site_ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:85:in require'
from internal:/home/ustuntas/.rbenv/versions/3.2.1/lib/ruby/site_ruby/3.2.0/rubygems/core_ext/kernel_require.rb:85:in require' from /home/ustuntas/.gem/ruby/3.2.0/gems/ruby-fann-1.3.2/lib/ruby-fann.rb:1:in <top (required)>'
from internal:/home/ustuntas/.rbenv/versions/3.2.1/lib/ruby/site_ruby/3.2.0/rubygems/core_ext/kernel_require.rb:159:in require' from <internal:/home/ustuntas/.rbenv/versions/3.2.1/lib/ruby/site_ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:159:in rescue in require'
from internal:/home/ustuntas/.rbenv/versions/3.2.1/lib/ruby/site_ruby/3.2.0/rubygems/core_ext/kernel_require.rb:39:in require' from tester.rb:1:in

from ruby-fann.

I encountered the same issue on Ruby 2.7 and Debian 11. So far I seem to have gotten it fixed while the following change: master...xhs345:ruby-fann:master

from ruby-fann.