📜  红宝石 |哈希 to_a 方法

📅  最后修改于: 2022-05-13 01:54:24.441000             🧑  作者: Mango

红宝石 |哈希 to_a 方法

Hash#to_a()是一个 Hash 类方法,它给出了一个键值对的嵌套数组。

示例 #1:

# Ruby code for Hash.to_a() method
  
# declaring Hash value
a = {a:100, b:200}
  
# declaring Hash value
b = {a:100, c:300, b:200}
  
# declaring Hash value
c = {a:100}
  
  
# to_a Value
puts "Hash a to_a form : #{a.to_a()}\n\n"
  
puts "Hash b to_a form : #{b.to_a()}\n\n"
  
puts "Hash c to_a form : #{c.to_a()}\n\n"

输出 :

Hash a to_a form : [[:a, 100], [:b, 200]]

Hash b to_a form : [[:a, 100], [:c, 300], [:b, 200]]

Hash c to_a form : [[:a, 100]]


示例 #2:

# Ruby code for Hash.to_a() method
  
# declaring Hash value
a = { "a" => 100, "b" => 200 }
  
# declaring Hash value
b = {"a" => 100}
  
# declaring Hash value
c = {"a" => 100, "c" => 300, "b" => 200}
  
  
# to_a Value
puts "Hash a to_a form : #{a.to_a()}\n\n"
  
puts "Hash b to_a form : #{b.to_a()}\n\n"
  
puts "Hash c to_a form : #{c.to_a()}\n\n"

输出 :

Hash a to_a form : [["a", 100], ["b", 200]]

Hash b to_a form : [["a", 100]]

Hash c to_a form : [["a", 100], ["c", 300], ["b", 200]]