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Ruby Hash merge!用法及代码示例


Hash#merge!():merge!()是一个Hash类方法,可以将给定哈希数组的内容添加到另一个哈希方法中。如果未给出任何块,则具有重复键的条目将依次被每个other_hash的值覆盖。

用法:Hash.merge!()

参数:散列值


返回:将给定哈希数组的内容添加到另一个

范例1:

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

输出:

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

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

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

范例2:

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

输出:

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

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

Hash c merge! 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 merge! function。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。