Fastercsv Error with Ruby 1.9.2

fastercsv error with ruby 1.9.2

I found the answer to my question

Its based on this post

What is Ruby 1.9 standard CSV library?

and as the solution i had to

require 'csv'

instead of

require 'fastercsv'

and change the FasterCSV to CSV

What is Ruby 1.9 standard CSV library?

Ruby 1.9 has adopted FasterCSV as its built-in CSV library. However, it's in the standard library rather than Ruby 1.9's core, so you need to manually require it in your application.

After adding a

require 'csv'

to your code, you can then do things such as

CSV.parse("this,is,my,data")

See Ruby 1.9's standard library CSV documentation for information on using the library.

rails 3 ruby 1.9.2 CSV already initialized constant .. warning

I ran into the same issue, after some digging I realized that I was requiring 'CSV' where I should have been requiring 'csv' it should be all lowercase.

Rails 3 Server Startup problem with fastercsv

Remove fasterCSV from your Gemfile in the application. Bundler is trying to require FasterCSV because you have it specified in the Gemfile.

fasterCSV for ruby 1.9.3?

As of Ruby 1.9.2 FasterCSV is already included as standard library's CSV. Just change references in your application from FasterCSV to CSV and it should work. Check out the docs and this new Railscast.

Reading in CSV files smaller than 10K from S3 with Ruby 1.9.2 p290

I'm going to guess that CSV.read is being handed a StringIO when it wants a String. If so, then you should be able to stick a read call in and switch to CSV.parse to make everyone happy:

lines = CSV.parse(open(resource.csv(:original)).read)

open and return fastercsv object with headers

You should use the standard CSV library. It's FasterCSV plus support for Ruby 1.9's m17n encoding engine.

Back to your question, there is a :headers option to access each value by the headers.

The #read method will slurp the entire file:

CSV.read(CSV_FILE_PATH, :headers => true).each do |line|
  puts line['Ticker']
end

The #foreach method is the intended primary interface for reading:

CSV.foreach(CSV_FILE_PATH, :headers => true) do |line|
  puts line['Ticker']
end

Both methods will output:

EUR.USD-IDEALPRO-CASH
EUR.USD-IDEALPRO-CASH

See http://ruby-doc.org/stdlib-1.9.2/libdoc/csv/rdoc/CSV.html.

Example Application of FasterCSV

The FasterCSV examples folder provides several examples.

PS. Please note that FasterCSV has nothing to do with Rails framework. Is a Ruby library.

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