What is the easiest way to convert a ruby array to an array of consecutive pairs of its elements?
I mean: x = [a, b, c, d] → y = [[a, b], [c, d]]
views:
61answers:
2Clever, but it does not preserve the order.
jleedev
2010-08-13 14:34:35
It does (at least in Ruby 1.9.2dev).
floatless
2010-08-13 14:42:15
Fascinating! http://www.igvita.com/2009/02/04/ruby-19-internals-ordered-hash/
jleedev
2010-08-13 14:46:11
It also fails if there happens to be a duplicate key. `Hash[*[:a,:b,:c,:d,:a,:e]]`
Chubas
2010-08-14 01:25:16
+5
A:
y = x.each_slice(2).to_a
irb(main):001:0> [0,1,2,3,4,5].each_slice(2).to_a
=> [[0, 1], [2, 3], [4, 5]]
deinst
2010-08-13 14:31:42