如何将文件的元素放入散列？ -红宝石 [英] How to put elements of a file into a hash? -Ruby

问题描述

所以我有一个文件格式为：

  Key1 Value1 
 Key2 Value2 
 Key3 Value3 
  

由选项卡分隔。我的问题是我如何打开这个文件并将其放入哈希？我曾试图这样做：

  fp = File.open（file_path）
 
 fp.each do |线| 
 value = line.chomp.split（\ t）
 hash = Hash [* value.flatten] 
 end 
  

但是在循环结束时，@datafile散列只包含最新的条目......我有点想要它......

解决方案

hash [key] = value 添加一个新的键值对。 hash.update（otherhash）从otherhash添加键值对到哈希。

如果你这样做 hash = foo ，您可以重新分配散列值，丢失旧内容。

  hash = {} 
 File.open（file_path）do | fp | 
 fp.each do | line | 
 key，value = line.chomp.split（\ t）
 hash [key] = value 
 end 
 end 
  

So I have a file in the form of:

Key1   Value1
Key2   Value2
Key3   Value3

seperated by a tab. My question is how do I open this file and put it into a hash? I have tried to do:

 fp = File.open(file_path)

 fp.each do |line|
   value = line.chomp.split("\t")
   hash = Hash[*value.flatten]
 end

But at the end of this loop the @datafile hash only contains the latest entry...I kinda want it all.....

解决方案

hash[key] = value to add a new key-value pair. hash.update(otherhash) to add the key-value-pairs from otherhash to hash.

If you do hash = foo, you reassign hash, losing the old contents.

So for your case, you can do:

hash = {}
File.open(file_path) do |fp|
  fp.each do |line|
    key, value = line.chomp.split("\t")
    hash[key] = value
  end
end

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