迭代二维数组并知道当前位置

I am trying to iterate a multidimension array created with the following line

我试图迭代使用以下行创建的多维数组

To iterate i'm using the following code

迭代我使用以下代码

visiblematrix= Array.new (10) {Array.new(10){0}}

But this doesn't allow me to know the current x,y position while iterating. how can i find it out without resorting to temporary variables

但这不允许我在迭代时知道当前的x，y位置。如何在不诉诸临时变量的情况下找到它

visiblematrix.each do |x|
            x.each do |y|
                  puts y
            end 
end 

2 个解决方案

#1

use each_index instead of just each.

使用each_index而不是每个。

Keep in mind x and y would now be your index not the value at that index. So visiblematrix[x] etc.

请记住，x和y现在将是您的索引，而不是该索引处的值。所以visiblematrix [x]等

#2

You can also use the Enumerable#each_with_index method (ruby arrays include the Enumerable mixin).

您还可以使用Enumerable＃each_with_index方法（ruby数组包含Enumerable mixin）。

visiblematrix.each_with_index do |x, xi|
  x.each_with_index do |y, yi|
    puts "element [#{xi}, #{yi}] is #{y}"
  end
end