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asmega/group_by_col.rb

Created July 18, 2017 16:54
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group into columns
Raw
group_by_col.rb
max = 10.to_f
cols = 3
target = (max/cols).ceil
(0..max).to_a.slice_before(target: target) do |i,state|
if i > state[:target]
state[:target] += state[:target]
true
else
false
end
end.to_a
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