CODEWITHSUNDEEP
rubyenumerable
steenslag
steenslag

Reputation: 80065

How to iterate multiple enumerables in ruby?

I know two arrays can be zipped and the result can be iterated with #each. But how do you do it with an unknown number of enumerables? Let's say

anand = %w(1-0 0.5-0.5 0.5-0.5 1.0)
carlsen = %w(0-1 0.5-0.5 0.5-0.5 1.0)
kramnik = %w(0.5-0.5 0.5-0.5 0.5-0.5 1.0)
players= [anand, carlsen, kramnik]
#something smart

players.each{|round|puts round} #first line should be  "1-0 0-1 0.5-0.5"

Upvotes: 4

Views: 474

Answers (2)

glenn mcdonald
glenn mcdonald

Reputation: 15478

players.transpose.map {|a| a.join(" ")}

Upvotes: 9

sepp2k
sepp2k

Reputation: 370112

anand.zip(carlsen, kramnik) do |round| puts round.join(" ") end

This will print:

1-0 0-1 0.5-0.5
0.5-0.5 0.5-0.5 0.5-0.5
0.5-0.5 0.5-0.5 0.5-0.5
1.0 1.0 1.0

Upvotes: 4

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