在Ruby中分割兩次文本文件

Question

我收到以下文本文件。

bob jones,19,moore reef,yes,no 
jenny smith, 21,reef park,yes,yes 
any body, 12,somewhere,no,no 

我想每一行是在一個單獨的陣列或我想爲每一個數據片段（例如name_array，age_array，destination_array等）單獨的陣列。

我該怎麼做？

Answer 1

將文件拆分爲與readlines相關的行，然後對於每行使用逗號分隔的String#split。然後，如果你喜歡（用於你的「第二種方式」）轉置。

鑑於people.txt

bob jones,19,moore reef,yes,no 
jenny smith, 21,reef park,yes,yes 
any body, 12,somewhere,no,no 

該文件，那麼該文件的行obatined這樣的：

people = IO.readlines("people.txt") 
p people 

這給

["bob jones,19,moore reef,yes,no\n", 
"jenny smith, 21,reef park,yes,yes\n", 
"any body, 12,somewhere,no,no"] 

在這一點上，你有一些額外的在那裏有換行符，但是當你逐行處理時，它們會消失，加入String#chomp：

result = [] 
people = IO.readlines("people.txt") 
people.each {|line| result << line.chomp.split(",")} 
p result 

這給

[["bob jones", "19", "moore reef", "yes", "no"], 
["jenny smith", " 21", "reef park", "yes", "yes"], 
["any body", " 12", "somewhere", "no", "no"]] 

你問題的第二部分是如何得到片每列。最簡單的方法是使用transpose。像這樣：

result = [] 
people = IO.readlines("people.txt") 
people.each {|line| result << line.chomp.split(",")} 
p result.transpose 

這給

[["bob jones", "jenny smith", "any body"], 
["19", " 21", " 12"], 
["moore reef", "reef park", "somewhere"], 
["yes", "yes", "no"], 
["no", "yes", "no"]] 

UPDATE我不得不修改我的答案中添加要吃掉！此外，您可能還想添加一些字符串修剪。我會讓你看起來那個。從標準庫中的CSV分析器:-)

Answer 2

加載：

require 'csv' 
a = CSV.open('x.csv').map { |r| r.map(&:strip) } 

的會給你一個a這樣的：

[ 
    [ "bob jones", "19", "moore reef", "yes", "no" ], 
    [ "jenny smith", "21", "reef park", "yes", "yes" ], 
    [ "any body", "12", "somewhere", "no", "no" ] 
] 

然後你可以使用b = a.transpose翻轉行並在b列中獲得：

[ 
    [ "bob jones", "jenny smith", "any body" ], 
    [ "19", "21", "12" ], 
    [ "moore reef", "reef park", "somewhere" ], 
    [ "yes", "yes", "no" ], 
    [ "no", "yes", "no" ] 
] 

然後從那裏你可以拉出來單獨的陣列，如果你希望他們：

names, ages, destinations, flags1, flags2 = *b 

我不得不猜測flags1和flags2名。

Answer 3

我做到了這一點;

f1 = File.open(filename,"r")     
f1.each do | line| 
    i += 1 
    data = line.split(',') 
    #store data into arrays 
    passenger_name[i] = data[0] #passenger's name 
    passenger_age[i] = data[1] 
    passenger_destination[i] = data[2] 
    passenger_meal[i] = data[3] 
    passenger_dive[i] = data[4] 
    end 

它存儲每個姓名，年齡，目的地等不同陣列解決我的問題更好。感謝你的所有迴應。