freeCodeCamp/guide/chinese/miscellaneous/learn-about-ruby-hashes/index.md

title, localeTitle

title	localeTitle
Learn About Ruby Hashes	了解Ruby Hashes

基本：

• Ruby散列与Python等语言中的Javascript对象或词典相当。
• 散列包含key: value对存储的项目。
• 可以使用以下方法创建Ruby哈希：
  • my_hash = {}
  • my_hash = Hash.new
• Ruby中内置了许多方法来查找和更新哈希值。

例子：

my_hash = {'name' => 'Batman', 'age' => 25} 
 # is equivalent to: 
 my_hash = Hash.new 
 my_hash<a href='http://www.randomhacks.net/2007/01/20/13-ways-of-looking-at-a-ruby-symbol/' target='_blank' rel='nofollow'>'name'] = 'Batman' 
 my_hash['age'] = 25 
 # Both of these examples return: 
 {"name"=>"Batman", "age"=>25} 
 
 # here is an alternative way to create the array: 
 {name: 'Batman', age: 25} 
 # this example return: 
 {:name=>"Batman", :age=>25} 
 # learn more about [symbols here</a> 

参考文献：

• 哈希的官方Ruby文档 。