uninitialized constant CSV::Reader
in [Ruby]
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From: Nathan Sharkey on 31 Mar 2010 14:13 James Edward Gray II wrote: > On Mar 31, 2010, at 12:01 PM, Robert Klemme wrote: > >> Obviously he is using CSV already - just with a part of the old interface that has not survived. :-) He rather needs to adjust to the interface >> >> CSV.foreach 'stuff.csv' do |row| >> ... >> end > > Exactly. I assumed since he mentioned using FasterCSV, he had code like > this somewhere he could just strip the Faster (or F) off of. > > James Edward Gray II hehe cheers guys that gives me a start :-) I'm just learning ruby and hadn't used either. I stumbled across FasterCSV which told me to use CSV however i didn't think to try the faster csv example with CSV instead i googled for CSV examples and obviously stumbled across some for older versions :-) Thanks again for such speedy responses, off to get productive with some csv file importing :-) -- Posted via http://www.ruby-forum.com/.
From: Robert Klemme on 31 Mar 2010 13:01
2010/3/31 James Edward Gray II <james(a)graysoftinc.com> > > On Mar 31, 2010, at 9:29 AM, Nathan Sharkey wrote: > > > Brian Candler wrote: > >> Nathan Sharkey wrote: > >> > >>> require 'csv' > >>> > >>> CSV::Reader.parse(File.open('stuff.csv', 'rb')) do |row| > >> ... > >>> NameError: uninitialized constant CSV::Reader > >> ... > >>> any ideas?? > >> > >> Perhaps you have another file called csv.rb which is earlier in your > >> $LOAD_PATH > >> > >> (If your own program is called csv.rb, that would the the culprit :-) > >> > >> In any case, you'd probably be better off with the fastercsv gem. > > > > Hi, thanks for response, Fastercsv actually quits with the following > > notice which made me try CSV::Reader in the first place :-) > > > > "Please switch to Ruby 1.9's standard CSV library. It's FasterCSV plus > > support for Ruby 1.9's m17n encoding engine." > > > > I havn't created any csv.rb file and I'll check loadpath but I would be > > happy to use FasterCSV if anyone can suggest how i do this given the > > above notice. > > You don't want to be using it. That's why I put the error there. :) > > The CSV library in Ruby 1.9 is literally the FasterCSV code. The reason it's preferable though is that it has been enhanced to handle Ruby 1.9-isms, like m17n. That's why you need to switch over. > > CSV::Reader is something from Ruby 1.8's version of CSV (before it was replaced by the FasterCSV code). You can't use that anymore with 1.9. Instead, you should mostly just be able to replace FasterCSV (or FSCV) with CSV in your code and it will work fine. > > Does that make sense? I'd say yes - apart from the replacement suggestion. Obviously he is using CSV already - just with a part of the old interface that has not survived. :-) He rather needs to adjust to the interface CSV.foreach 'stuff.csv' do |row| ... end Kind regards robert -- remember.guy do |as, often| as.you_can - without end http://blog.rubybestpractices.com/ |