```ruby
class GitStore

  class User
    attr_accessor :name, :email, :time

    def initialize(name, email, time)
      @name, @email, @time = name, email, time
    end

    def dump
      "#{ name } <#{email}> #{ time.to_i } #{ time.strftime('%z') }"
    end

    def self.from_config
      name = IO.popen("git config user.name")  { |io| io.gets.chomp }
      email = IO.popen("git config user.email") { |io| io.gets.chomp }

      new name, email, Time.now
    end

    def self.parse(user)
      if match = user.match(/(.*)<(.*)> (\d+) ([+-]\d+)/)
        new match[1].strip, match[2].strip, Time.at(match[3].to_i + match[4].to_i * 3600)
      end
    end

  end

end
```

Make User a Struct so it's faster and Comparable
user
```ruby
class GitStore
  class User < Struct.new(:name, :email, :time)
    def dump
      "#{ name } <#{email}> #{ time.to_i } #{ time.strftime('%z') }"
    end

    def self.from_config
      name = IO.popen("git config user.name")  { |io| io.gets.chomp }
      email = IO.popen("git config user.email") { |io| io.gets.chomp }

      new name, email, Time.now
    end

    def self.parse(user)
      if match = user.match(/(.*)<(.*)> (\d+) ([+-]\d+)/)
        new match[1].strip, match[2].strip, Time.at(match[3].to_i + match[4].to_i * 3600)
      end
    end

  end

end
```
assistant