我似乎迷失了,试图实现以下目标,我整天都在努力帮助
我有
h = {
"kv1001"=> {
"impressions"=>{"b"=>0.245, "a"=>0.754},
"visitors" =>{"b"=>0.288, "a"=>0.711},
"ctr" =>{"b"=>0.003, "a"=>0.003},
"inScreen"=>{"b"=>3.95, "a"=>5.031}
},
"kv1002"=> {
"impressions"=>{"c"=>0.930, "d"=>0.035, "a"=>0.004, "b"=>0.019,"e"=>0.010},
"visitors"=>{"c"=>0.905, "d"=>0.048, "a"=>0.005, "b"=>0.026, "e"=>0.013},
"ctr"=>{"c"=>0.003, "d"=>0.006, "a"=>0.004, "b"=>0.003, "e"=>0.005},
"inScreen"=>{"c"=>4.731, "d"=>4.691, "a"=>5.533, "b"=>6.025, "e"=>5.546}
}
}
我的目标
{
"segment"=>"kv1001=a",
"impressions"=>"0.754",
"visitors"=>"0.711",
"inScreen"=>"5.031",
"ctr"=>"0.003"
}, {
"segment"=>"kv1001=b",
"impressions"=>"0.245",
"visitors"=>"0.288",
"inScreen"=>"3.95",
"ctr"=>"0.003"
}, {
"segment"=>"kv1002=a",
"impressions"=>"0.004"
#... etc
}
我的目标是创建一个带有'kv1001 = a'的散列,即散列内的字母,并分配印象,访问者等关键字。示例MY GOAL具有格式 所以格式类型“kv1001 = a”必须从散列本身构造,a是散列内的字母。
我现在已经解决了这个问题
`data_final = []
h.each do |group,val|
a = Array.new(26){{}}
val.values.each_with_index do |v, i|
keys = val.keys
segment_count = v.keys.length
(0..segment_count-1).each do |n|
a0 = {"segment" => "#{group}=#{v.to_a[n][0]}", keys[i] => v.to_a[n][1]}
a[n].merge! a0
if a[n].count > 4
data_final << a[n]
end
end
end
end`
答案 0 :(得分:2)
这是一个更简单的版本
h.flat_map do |segment, attrs|
letters = attrs.values.flat_map(&:keys).uniq
# create a segment entry for each unique letter
letters.map do |letter|
seg = {"segment" => "#{segment}=#{letter}"}
seg.merge Hash[attrs.keys.map {|key| [key,attrs[key][letter]]}]
end
end
输出:
[{"segment"=>"kv1001=b",
"impressions"=>0.245,
"visitors"=>0.288,
"ctr"=>0.003,
"inScreen"=>3.95},
{"segment"=>"kv1001=a",
"impressions"=>0.754,
"visitors"=>0.711,
"ctr"=>0.003,
"inScreen"=>5.031},
{"segment"=>"kv1002=c",
"impressions"=>0.93,
"visitors"=>0.905,
"ctr"=>0.003,
"inScreen"=>4.731},
{"segment"=>"kv1002=d",
"impressions"=>0.035,
"visitors"=>0.048,
"ctr"=>0.006,
"inScreen"=>4.691},
{"segment"=>"kv1002=a",
"impressions"=>0.004,
"visitors"=>0.005,
"ctr"=>0.004,
"inScreen"=>5.533},
{"segment"=>"kv1002=b",
"impressions"=>0.019,
"visitors"=>0.026,
"ctr"=>0.003,
"inScreen"=>6.025},
{"segment"=>"kv1002=e",
"impressions"=>0.01,
"visitors"=>0.013,
"ctr"=>0.005,
"inScreen"=>5.546}]