I have an array of hashes:
我有一系列哈希：
connections = [
{:name=>"John Doe", :number=>"5551234567", :count=>8},
{:name=>"Jane Doe", :number=>"5557654321", :count=>6},
{:name=>"John Doe", :number=>"5559876543", :count=>3}
]
connect
阅读背景：
将某个键的重复值从散列数组合并到数组中
来源：互联网
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