Hash#to_a()是一种Hash类方法,它提供键值对的嵌套数组。
用法:Hash.to_a()
参数:散列值
返回:哈希的数组表示形式
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]]
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注:本文由纯净天空筛选整理自Kirti_Mangal大神的英文原创作品 Ruby | Hash to_a method。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。