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。