哪些与 Ruby YAML 中的 Marshal 方法 _load 和 _dump 等效？

发布于 2024-11-30 02:18:18 字数 691 浏览 5 评论 0原文

我正在使用标准 YAML 库，我有一个对象，在转储时将其转换为哈希，并在加载时从哈希转换。在 Marshal 中，我使用了 _load 和 _dump 方法重载，但 Marshal 不是人类可读的 =/

我想要自动加载对象的东西，比如 Marshal =/

类似这样的东西：

class Foo
    def initialize(numbers)
        @numbers = numbers
    end

    def to_yaml
        dump = {}
        @numbers.each {|k, v| dump[k.to_s] = v.to_s}
        dump.to_yaml
    end

    def self.from_yaml(dump)
        dump = YAML.load(dump)
        numbers = {}
        dump.each {|k, v| numbers[k.to_sym] = v.to_sym}
        new(numbers)
    end
end

bar = Foo.new({:one => :uno, :two => :dos, :three => :tres})
bar_yaml = bar.to_yaml
var = Foo.from_yaml(bar_yaml)
p var

但不太明确

原文

I'm using the standard YAML library, I have an object that I convert to a hash when dumping it, and I convert from a hash when loading. In Marshal I used _load and _dump methods overload, but Marshal is not human-readable =/

I want something that load automatically the objects, like Marshal =/

Something like this:

class Foo
    def initialize(numbers)
        @numbers = numbers
    end

    def to_yaml
        dump = {}
        @numbers.each {|k, v| dump[k.to_s] = v.to_s}
        dump.to_yaml
    end

    def self.from_yaml(dump)
        dump = YAML.load(dump)
        numbers = {}
        dump.each {|k, v| numbers[k.to_sym] = v.to_sym}
        new(numbers)
    end
end

bar = Foo.new({:one => :uno, :two => :dos, :three => :tres})
bar_yaml = bar.to_yaml
var = Foo.from_yaml(bar_yaml)
p var

But less explicit

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战皆罪 2024-12-07 02:18:18

除非我遗漏了你问题的某些部分，否则包装上面推荐的 juwiley 方法似乎是一个非常简单的解决方案。

require 'yaml'
class Foo
  def initialize(numbers)
    @numbers = numbers
  end

  def to_yaml
    Yaml::dump(self)
  end

  def self.from_yaml(dump)
    Yaml::load(dump)
  end
end

Unless I'm missing some part of your question, it seems like wrapping the methods that juwiley recommended above would be a very simple solution.

require 'yaml'
class Foo
  def initialize(numbers)
    @numbers = numbers
  end

  def to_yaml
    Yaml::dump(self)
  end

  def self.from_yaml(dump)
    Yaml::load(dump)
  end
end

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九公里浅绿 2024-12-07 02:18:18

http://corelib.rubyonrails.org/classes/YAML.html

require "yaml"

test_obj = ["dogs", "cats", "badgers"]

yaml_obj = YAML::dump( test_obj )
                    # -> ---
                         - dogs
                         - cats
                         - badgers
ruby_obj = YAML::load( yaml_obj )
                    # => ["dogs", "cats", "badgers"]
ruby_obj == test_obj
                    # => true

http://corelib.rubyonrails.org/classes/YAML.html

require "yaml"

test_obj = ["dogs", "cats", "badgers"]

yaml_obj = YAML::dump( test_obj )
                    # -> ---
                         - dogs
                         - cats
                         - badgers
ruby_obj = YAML::load( yaml_obj )
                    # => ["dogs", "cats", "badgers"]
ruby_obj == test_obj
                    # => true

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