fasterCSV操作

fasterCSV
This class provides a complete interface to CSV files and data. It offers tools to enable you to read and write to and from Strings or IO objects, as needed.
读
1.从一个文件读 每次读取一行

FasterCSV.foreach("path/to/file.csv") do |row| # use row here... end

全部读取

arr_of_arrs = FasterCSV.read("path/to/file.csv") 

2.从字符串里读
A Line at a Time

FasterCSV.parse("CSV,data,String") do |row| 
# use row here... end

All at Once

arr_of_arrs = FasterCSV.parse("CSV,data,String") 

写
To a File

FasterCSV.open("path/to/file.csv", "w") do |csv|
csv << ["row", "of", "CSV", "data"] 
csv << ["another", "row"] 
# ... end

To a String

csv_string = FasterCSV.generate do |csv|
csv << ["row", "of", "CSV", "data"] 
csv << ["another", "row"] 
# ... end

Convert a Single Line

csv_string = ["CSV", "data"].to_csv # to CSV 
csv_array = "CSV,String".parse_csv # from CSV 

Shortcut Interface

  
FCSV     { |csv_out| csv_out << %w{my data here} }  # to $stdout
FCSV(csv = "")   { |csv_str| csv_str << %w{my data here} } # to a String
FCSV($stderr)    { |csv_err| csv_err << %w{my data here} } # to $stderr

原文：http://fastercsv.rubyforge.org/

评论

1 楼 liyh 2008-11-13