如何减少ruby中数组的维数

Question

我们有这样的数组项:

items = [[[["2012-09-01", 10], ["2011-09-10", 20]]], [[["2010-01-01", 23]]]]

如何将4维项目缩减为二维数组,如下所示:

items = [["2012-09-01", 10], ["2011-09-10", 20], ["2010-01-01", 23]]

非常感谢.

Answer 1

尝试Array#flatten.- http://www.ruby-doc.org/core-1.9.3/Array.html#method-i-flatten

irb(main):001:0> items = [[[["2012-09-01", 10], ["2011-09-10", 20]]], [[["2010-01-01", 23]]]]
=> [[[["2012-09-01", 10], ["2011-09-10", 20]]], [[["2010-01-01", 23]]]]
irb(main):002:0> items.flatten(2)
=> [["2012-09-01", 10], ["2011-09-10", 20], ["2010-01-01", 23]]