Question

我正在Ruby中编写一个小数独求解应用程序，只输出到终端。例如：

 ruboku $ ruby grid.rb
+---+---+---+---+---+---+---+---+---+
| 2 | 8 | 5 |   | 3 | 1 | 7 | 6 | 9 |
+---+---+---+---+---+---+---+---+---+
| 5 |   | 4 | 8 | 7 | 2 | 1 | 9 | 3 |
+---+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+---+

有没有办法将其保持为持久显示，以便在有新信息显示时不打印新行，但更新已显示的网格？

我见过像ngrok这样的工具。

感谢您的时间，

汤姆

Answer 1

根据您的需要，擦除屏幕并再次创建网格可能已经足够了：

def show_grid
  line = '+---+---+---+---+---+---+---+---+---+'
  puts line
  9.times do
    row = (1..9).map { rand(9) + 1 }
    puts '| ' + row.join(' | ') + ' |'
    puts line
  end
end

def clear_screen
  system('clear') || system('cls')
end

loop do
  clear_screen
  show_grid
  sleep 1
end

输出

+---+---+---+---+---+---+---+---+---+
| 1 | 2 | 7 | 3 | 4 | 9 | 8 | 6 | 5 |
+---+---+---+---+---+---+---+---+---+
| 1 | 8 | 1 | 7 | 6 | 2 | 2 | 1 | 3 |
+---+---+---+---+---+---+---+---+---+
| 2 | 2 | 1 | 2 | 2 | 8 | 2 | 3 | 6 |
+---+---+---+---+---+---+---+---+---+
| 5 | 3 | 6 | 1 | 5 | 3 | 2 | 7 | 9 |
+---+---+---+---+---+---+---+---+---+
| 9 | 7 | 7 | 4 | 7 | 2 | 2 | 9 | 1 |
+---+---+---+---+---+---+---+---+---+
| 5 | 9 | 1 | 9 | 3 | 7 | 8 | 3 | 1 |
+---+---+---+---+---+---+---+---+---+
| 8 | 5 | 4 | 7 | 3 | 2 | 2 | 5 | 3 |
+---+---+---+---+---+---+---+---+---+
| 4 | 7 | 1 | 1 | 4 | 8 | 4 | 1 | 1 |
+---+---+---+---+---+---+---+---+---+
| 1 | 1 | 8 | 4 | 2 | 4 | 8 | 3 | 8 |
+---+---+---+---+---+---+---+---+---+

然后

+---+---+---+---+---+---+---+---+---+
| 6 | 4 | 4 | 3 | 5 | 5 | 8 | 9 | 1 |
+---+---+---+---+---+---+---+---+---+
| 7 | 7 | 7 | 3 | 3 | 2 | 8 | 7 | 6 |
+---+---+---+---+---+---+---+---+---+
| 6 | 2 | 2 | 1 | 4 | 7 | 1 | 1 | 9 |
+---+---+---+---+---+---+---+---+---+
| 3 | 8 | 7 | 7 | 7 | 9 | 7 | 4 | 4 |
+---+---+---+---+---+---+---+---+---+
| 4 | 1 | 2 | 8 | 6 | 7 | 1 | 9 | 3 |
+---+---+---+---+---+---+---+---+---+
| 6 | 7 | 7 | 5 | 1 | 7 | 6 | 7 | 4 |
+---+---+---+---+---+---+---+---+---+
| 8 | 2 | 3 | 5 | 3 | 5 | 4 | 7 | 2 |
+---+---+---+---+---+---+---+---+---+
| 5 | 9 | 3 | 2 | 4 | 2 | 9 | 6 | 3 |
+---+---+---+---+---+---+---+---+---+
| 1 | 7 | 8 | 9 | 4 | 3 | 4 | 1 | 5 |
+---+---+---+---+---+---+---+---+---+

...然后

它应该适用于Windows / Linux / MacOs。

对于任何更复杂的事情，你都需要一个ncurses gem。

Answer 2

所以问题被标记为已回答我认为我会在评论中写下给我的建议。

看起来ncurses ruby gem和vedeu提供了我需要的功能。另一种选择是清除scren并重新打印输出。

持久命令行显示

2 个答案: