Ruby Hash rassoc()函数

rassoc()是一个Hash类方法，它通过Hash值搜索一个元素。

语法。Hash.rassoc()

参数：用于寻找元素的哈希值。

返回：通过Hash值搜索一个元素

例子 #1:

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

输出:

check : ["b", "200"]

check : ["c", 300]

check : ["a", 100]

例子 #2 :

# Ruby code for rassoc() method
  
# declaring Hash value
a = { "a" => "geek", "b" => "200" }
  
# declaring Hash value
c = {"a" => "abc", "c" => 300, "b" => 200}
  
puts "check : #{a.rassoc("geek")}\n\n"
  
puts "check : #{c.rassoc(300)}\n\n"
  
puts "check : #{c.rassoc("abc")}\n\n"

输出:

check : ["a", "geek"]

check : ["c", 300]

check : ["a", "abc"]