我試圖用另一個文件中的值替換一個大的(4.6GB)csv文件中的列。例如:Ruby類型錯誤
| id |名稱|
| 01 |約翰
| id |地址|電話|
| 01 |放置|號碼
我想要的是底部表中的01用'john'替換。
new = CSV.open("usage_new.csv", "w")
prog = CSV.read("programs.csv", encoding:"ASCII-8BIT")
CSV.foreach("Usage-fixed.csv", encoding:"ASCII-8BIT") do |row|
for i in 0..prog.size
if row[5] == prog[i][0]
puts row[5] + " equals " + prog[i][1]
new << [ row[0] + row[1] + row[2] + row[3] + row[4] + prog[i][1] + row[5] + row[6] + row[7] + row[8] + row[9] + row[10] + row[11] + row[12] + row[13] + row[14] + row[15] + row[16] + row[17] ]
end
end
end
的問題是我不斷收到以下錯誤:
blah.rb:11:in `block (2 levels) in <main>': undefined method `[]' for nil:NilClass (NoMethodError)
from blah.rb:10:in `each'
from blah.rb:10:in `block in <main>'
from /home/mastelj/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/csv.rb:1717:in `each'
from /home/mastelj/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/csv.rb:1120:in `block in foreach'
from /home/mastelj/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/csv.rb:1266:in `open'
from /home/mastelj/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/csv.rb:1119:in `foreach'
from blah.rb:9:in `<main>'
什麼可能導致這樣的任何想法?
編輯:11號線(違規線)與IFF聲明
好了,好了,我是個白癡。謝謝。 – Jacobm001