Question

为Jekyll编写一个插件，因为我还不熟悉，所以我被一些ruby相关代码所困扰如何在阵列上做.select，.map及其所有朋友（除了简单的一个数组案例）

所以现在我的问题是，将其作为一系列文档，使用相关的sha1sum代码：

[
    [
        #<Jekyll::Document _projects/1st-project.md collection=projects>,
        "8f918a3d8263a957c206a9864d3507aaa5277a79"
    ],
    [
        #<Jekyll::Document _posts/2nd-project.markdown collection=posts>,
        "ca81eda5d49100bdf23db16fe1c9d17040fd33f8"
    ],
    [
        #<Jekyll::Document _posts/3rd-project.markdown collection=posts>,
        "37bf18464b00c9a808436853bc6d868aff218eb6"
    ],
    ...
    ...
]

另一方面，链接组的哈希就像这样：

{
    "linkage_groups"=>
    [
        {
            "group_name"=>"test1",
            "sha1_sums"=> [
                "ca81eda5d49100bdf23db16fe1c9d17040fd33f8",
                "37bf18464b00c9a808436853bc6d868aff218eb6"
            ]
        },
        {
            "group_name"=>"test1",
            "sha1_sums"=> [
                "154c255d59e6063fc609ade2254dc1b09d1de8ab",
                "3e9ef9f059786888e39df608d104263cf0fdae76"
            ]
        }
    ]
}

我如何能够一次循环浏览这些组，并从上面的每组sha1_sums文档中返回数组，其中文档的sha1_sum存在于特定组中。

预期输出将是每个组的哈希数组，持有满足条件的文档，在sha1_sum出现在一个组中：

实施例。第2和第3个项目符合条件，因为他们的sha's位于名为test1

的组中

[
    {
        "test1" => [#<Jekyll::Document _posts/2nd-project.markdown collection=posts>, #<Jekyll::Document _posts/3rd-project.markdown collection=posts]
    },
    {
        "test2" => [..., ...]
    },
    {
        "test3" => [..., ...]
    },
    ...
]

截至@Lukas Baliak的回复 -

以下是两个属于同一组的哈希值的结果：

{
    "ca81eda5d49100bdf23db16fe1c9d17040fd33f8"=>"test1",
    "b673be35ad73ab48da23b271ab0dda95ea07c905"=>"test1",
    "154c255d59e6063fc609ade2254dc1b09d1de8ab"=>"test2",
    "3e9ef9f059786888e39df608d104263cf0fdae76"=>"test2"
}

[
    [
        #<Jekyll::Document _projects/my-first-project.md collection=projects>,
        "b673be35ad73ab48da23b271ab0dda95ea07c905"
    ],
    [
        #<Jekyll::Document _posts/2016-06-05-one-more-post.markdown collection=posts>,
        "ca81eda5d49100bdf23db16fe1c9d17040fd33f8"
    ]
]

{
    "test1"=> [#<Jekyll::Document _posts/2016-06-05-one-more-post.markdown collection=posts>, "ca81eda5d49100bdf23db16fe1c9d17040fd33f8"]
}

只列出一个文件，为什么？ b673be35ad73ab48da23b271ab0dda95ea07c905在哪里？

Answer 1

我不喜欢使用简单的数据结构，所以我将“迁移”到Hash

文档

doc = [
  [
    "#<Jekyll::Document _projects/my-first-project.md collection=projects>",
    "8f918a3d8263a957c206a9864d3507aaa5277a79"
  ],
  [
   "#<Jekyll::Document _posts/2016-06-05-one-more-post.markdown collection=posts>",
    "ca81eda5d49100bdf23db16fe1c9d17040fd33f8"
  ]
]

group_config

group_config = {
  "linkage_groups" => [
    {
      "group_name" => "test1",
      "sha1_sums" => [
        "ca81eda5d49100bdf23db16fe1c9d17040fd33f8",
        "b673be35ad73ab48da23b271ab0dda95ea07c905"
      ]
    },
    {
      "group_name" => "test2",
      "sha1_sums" => [
        "154c255d59e6063fc609ade2254dc1b09d1de8ab",
        "8f918a3d8263a957c206a9864d3507aaa5277a79"
      ]
    }
  ]
}

迁移到Hash

groups = group_config["linkage_groups"].each_with_object({}) do |h, exp|
  h["sha1_sums"].each { |sha1| exp[sha1] = h["group_name"] }
end

导出组

p groups

# {
#   "ca81eda5d49100bdf23db16fe1c9d17040fd33f8" => "test1",
#   "b673be35ad73ab48da23b271ab0dda95ea07c905" => "test1",
#   "154c255d59e6063fc609ade2254dc1b09d1de8ab" => "test2",
#   "8f918a3d8263a957c206a9864d3507aaa5277a79" => "test2"
# }

生成哈希结构的过程

export = doc.each_with_object({}) do |arr, exp|
  exp[groups[arr[1]]] = arr
end

输出

p export

# {
#   "test2" => ["#<Jekyll::Document _projects/my-first-project.md collection=projects>", "8f918a3d8263a957c206a9864d3507aaa5277a79"],
#   "test1" => ["#<Jekyll::Document _posts/2016-06-05-one-more-post.markdown collection=posts>", "ca81eda5d49100bdf23db16fe1c9d17040fd33f8"]
# }

修改

如果您需要更多，请使用此修改

export = doc.each_with_object(Hash.new{|k, v| k[v] = []}) do |arr, exp| exp[groups[arr[1]]] << arr end

编辑2

好的，如果你需要一个sha1_hash到更多的组，你可以使用这个更新。

groups = group_config["linkage_groups"].each_with_object(Hash.new { |k, v| k[v] = [] }) do |h, exp| h["sha1_sums"].each { |sha1| exp[sha1] << h["group_name"] } end

基

p groups # { # "ca81eda5d49100bdf23db16fe1c9d17040fd33f8" => ["test1"], # "b673be35ad73ab48da23b271ab0dda95ea07c905" => ["test1"], # "8f918a3d8263a957c206a9864d3507aaa5277a79" => ["test1", "test2"], # "154c255d59e6063fc609ade2254dc1b09d1de8ab" => ["test2"] # }

过程

export = doc.each_with_object(Hash.new { |k, v| k[v] = [] }) do |arr, exp| groups[arr[1]].each { |group| exp[group] << arr } end

输出

p export # { # "test1" => [ # ["#<Jekyll::Document _projects/my-first-project.md collection=projects>", "8f918a3d8263a957c206a9864d3507aaa5277a79"], # ["#<Jekyll::Document _posts/2016-06-05-one-more-post.markdown collection=posts>", "ca81eda5d49100bdf23db16fe1c9d17040fd33f8"] # ], # "test2" => [ # ["#<Jekyll::Document _projects/my-first-project.md collection=projects>", "8f918a3d8263a957c206a9864d3507aaa5277a79"], # ["#<Jekyll::Document _posts/2016-06-0s-one-more-post.markdown collection=posts>", "154c255d59e6063fc609ade2254dc1b09d1de8ab"] # ] # }

我希望这会有所帮助。

Answer 2

你的问题不是很清楚。有时，有助于详细说明输入的预期输出。我假设array包含Document/Sha1对，而hash包含linkage_groups。

hash看起来像这样：

{"linkage_groups"=>[{"group_name"=>"test1", "sha1_sums"=>["ca81eda5d49100bdf23db16fe1c9d17040fd33f8", "b673be35ad73ab48da23b271ab0dda95ea07c905"]}, {"group_name"=>"test1", "sha1_sums"=>["154c255d59e6063fc609ade2254dc1b09d1de8ab", "3e9ef9f059786888e39df608d104263cf0fdae76"]}]}

array看起来像这样：

[["Document1", "8f918a3d8263a957c206a9864d3507aaa5277a79"], ["Document2", "ca81eda5d49100bdf23db16fe1c9d17040fd33f8"]]

我会尝试这样的事情：

hash["linkage_groups"].each { |group|  // for each linkage group
    group["sha1_sums"].each { |sha1|   // for each sha1 in group
        array.each { |array_element|   // for each array element (which itself is an array of document/sha1 pairs
            if array_element.include?(sha1) then 
                puts "#{array_element[0]} found in #{group["group_name"]} with #{group["sha1"]}" 
            end 
        } 
    } 
}

我可以根据您的需要管理如何返回元素。

根据另一个数组中的值返回一个数组中的元素

2 个答案: