红宝石 |哈希 to_s()函数

Hash#to_s()是一个哈希类方法，它给出哈希的字符串表示。

Syntax:
Hash.to_s()

Parameter:
Hash values

Return:
string representation of hash

示例 #1：

# Ruby code for Hash.to_s() 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_s Value
puts "Hash a to_s form : #{a.to_s()}\n\n"
  
puts "Hash b to_s form : #{b.to_s()}\n\n"
  
puts "Hash c to_s form : #{c.to_s()}\n\n"

输出 ：

Hash a to_s form : {:a=>100, :b=>200}

Hash b to_s form : {:a=>100, :c=>300, :b=>200}

Hash c to_s form : {:a=>100}

示例 #2：

# Ruby code for Hash.to_s() 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_s Value
puts "Hash a to_s form : #{a.to_s()}\n\n"
  
puts "Hash b to_s form : #{b.to_s()}\n\n"
  
puts "Hash c to_s form : #{c.to_s()}\n\n"

输出 ：

Hash a to_s form : {"a"=>100, "b"=>200}

Hash b to_s form : {"a"=>100}

Hash c to_s form : {"a"=>100, "c"=>300, "b"=>200}