ruby Array key pair value?

Question

I am trying to pair up two key value pairs but I am unsure how to accomplish this. Below is what I have attempted:

struc = Array[(3,4),(5,6)]
for i in 0..1
    puts "#{struc[i,i]}"
end

But my desired output is the following (which the previous code block does not produce):

3 4
5 6

Solution 1

try this:

arr = [[3,4],[5,6]]
arr.each do |(a,b)|
  puts "#{a} #{b}"
end

Also you array syntax (Array[(3,4),(5,6)]) is incorrect.

Solution 2

Why not use a hash. With it, you can do:

struc = {3 => 4, 5 => 6}

To output the result, you can use the each_pair method, like so:

struc.each_pair do |key, value|
    puts "#{key} #{value}"
end

Comments

[Ronan Fauglas]

Watch out only works if first item is unique key: {3 => 4, 5 => 6, 3=> 5} will give: {3=>5, 5=>6}

[Sunil Kumar]

Its a hash, therefore the key will always be unique.