Convert multiple level array to single level array?

Question

I want to convert this array

[[["b", "c"], ["c", "d"]], [["v", "e"], ["r", "g"]]]

into

[["b", "c"], ["c", "d"], ["v", "e"], ["r", "g"]]

How can I convert this ?

Stefan · Accepted Answer · 2013-08-06 10:53:48Z

13

Array#flatten takes an optional level:

The optional level argument determines the level of recursion to flatten

Example:

[[["b", "c"], ["c", "d"]], [["v", "e"], ["r", "g"]]].flatten(1)
#=> => [["b", "c"], ["c", "d"], ["v", "e"], ["r", "g"]]

answered Aug 6, 2013 at 10:53

Stefan

115k14 gold badges157 silver badges234 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Bachan Smruty · Accepted Answer · 2013-08-06 10:56:55Z

0

arr = []
a = [[["b", "c"], ["c", "d"]], [["v", "e"], ["r", "g"]]]
a.map{|x| x.map{|y| arr << y}}
puts arr

answered Aug 6, 2013 at 10:56

Bachan Smruty

5,7341 gold badge20 silver badges23 bronze badges