📜  红宝石 |哈希 shift() 方法

📅  最后修改于: 2022-05-13 01:55:38.943000             🧑  作者: Mango

红宝石 |哈希 shift() 方法

Hash#shift()是一个 Hash 类方法,它从哈希中删除一个键值对,然后将这些值作为两项数组返回。

示例 #1:

# Ruby code for Hash.shift() method
  
# declaring Hash value
a = {a:455, b:200}
  
# declaring Hash value
b = {e:500, c:300, b:200}
  
# declaring Hash value
c = {a:100}
  
  
# shift Value
puts "Hash a shift form : #{a.shift()}\n\n"
  
puts "Hash b shift form : #{b.shift()}\n\n"
  
puts "Hash c shift form : #{c.shift()}\n\n"

输出 :

Hash a shift form : [:a, 455]

Hash b shift form : [:e, 500]

Hash c shift form : [:a, 100]

示例 #2:

# Ruby code for Hash.shift() method
  
# declaring Hash value
a = { "a" => 344, "b" => 200 }
  
# declaring Hash value
b = {"a" => 100}
  
# declaring Hash value
c = {"e" => 100, "c" => 300, "b" => 200}
  
  
# shift Value
puts "Hash a shift form : #{a.shift()}\n\n"
  
puts "Hash b shift form : #{b.shift()}\n\n"
  
puts "Hash c shift form : #{c.shift()}\n\n"

输出 :

Hash a shift form : ["a", 344]

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

Hash c shift form : ["e", 100]