27 lines
464 B
Ruby
27 lines
464 B
Ruby
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class OrderedHash < Hash
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attr_accessor :ordered_keys
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def keys
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@ordered_keys || []
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end
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def []=(key, value)
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@ordered_keys ||= []
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@ordered_keys << key unless @ordered_keys.include?(key)
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super(key, value)
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end
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def each
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@ordered_keys ||= []
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@ordered_keys.each { |k| yield k, self[k] }
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end
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def merge(other)
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@ordered_keys ||= []
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@ordered_keys += other.keys # unordered if not an OrderedHash
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super(other)
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end
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end
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