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"RubyCopy 输出: check : ["b", "200"] check : ["c", 300] check : ["a", 100]RubyCopy 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"RubyCopy 输出: check : ["a", "geek"] check : ["c", 300] check : ["a", "abc"]RubyCopy
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