Question

我有以下法典,我只是想把它放在更清洁的眼光上? 基本上,一个团队有很多游戏,我想把所有游戏结合起来,通过他们的归属游戏加以控制?

    @games = Array.new
    @teams.each {|team|
      team_games = team.games
      @games << team_games
    }

    @games = @games.flatten

Answer 1

How about:

@teams.map(&:games).flatten.sort_by(&:game_date)

......或可能:

@teams.reduce([]) { |memo, team| memo + team.games }.sort_by(&:game_date)

......这可以按最近的《鲁比》文本(确切地说,这出现在:

@teams.reduce([], :+).sort_by(&:game_date)

NB: Symbol#to_proc (the bits that look like &:symbol) needs a recent version of Ruby (not quite sure of the required version). This construct is the same as passing a block like { |arg| arg.symbol } to the method. Eg: map(&:games) is equivalent to map { |team| team.games }

NB the second: collect and map are synonyms, as are inject and reduce.

Answer 2

How about this?

@games = @teams.map(&:games).flatten

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