Problems with ruby IO methods

[seoanezonjic]

Hi
I'm using the nmatrix gem and this gem uses as dependency packable. When I perform a require of nmatrix and use the method each of IO, in order to read a plain text file, as for example:

File.open(file_name, 'w').each do |line|

I get the following error:

.gem/ruby/2.4.1/gems/packable-1.3.10/lib/packable/extensions/io.rb:56:in `each': not opened for reading (IOError)
        from .gem/ruby/2.4.1/gems/packable-1.3.10/lib/packable/extensions/io.rb:56:in `each_with_packing'

This problem was commented in this issue: SciRuby/nmatrix#548 but I'm not sure about if this is an implementation problem of nmatrix or of packable ¿Can you give me some workaround for this problem or some advice? I'm really stuck with this problem.
Thank you in advance
Pedro Seoane

[seoanezonjic]

Sorry for the error, but this problem is manifestated by the use of 'w' when the open method is invoked. With the correct use of open, the problem is gone but this issue is still open in nmatrix git and I'd misunderstood the problem. I see that you belong to the SciRuby community ¿Can you speak with the nmatrix people about this? I think that your two last commits fixed the problem but their fork lacks of them.
Thank you and sorry for the inconvenience.
Pedro Seoane

[marcandre]

I believe this is is fixed in 1.3.12. Thanks for the report.