How to separate array elements into strings properly?

Question

I have an array set up like

%w(Dog Cat Bird Rat).each_with_index do |element, index|
# "w" for word array
# It's a shortcut for arrays

  puts ("%-4s + #{index}" % element)    
end

This will output something similar like

Dog + 0
Cat + 1
Bird + 2
Rat + 3

What if I want to change the animals to something such as a string? So that it says

This is string 0 + 0
This is string 1 + 1
This is string 2 + 2
etc

Is there a way to do that? This does not work:

%w('This is string 0', 'This is string 1', 'This is string 2', 'This is string 3').each_with_index do |element, index|
# "w" for word array
# It's a shortcut for arrays

  puts ("%-4s + #{index}" % element)    
end

4.times { |i| puts "This is string #{i} + #{i}" }

Sagar Pandya
– Sagar Pandya

2017-08-06 18:36:04 +00:00
Commented Aug 6, 2017 at 18:36 — Sagar Pandya
– Sagar Pandya, Commented Aug 6, 2017 at 18:36

Ursus · Accepted Answer · 2017-08-06 17:49:34Z

4

If you want that your arrays can contain strings with spaces build it in the regular way.

['This is string 0', 'This is string 1', 'This is string 2', 'This is string 3'].each_with_index do |element, index|

Note that this could be written in many ways. One shorter way is

(0..3).map { |i| "This is string #{i}" }.each_with_index do |element, index|

answered Aug 6, 2017 at 17:49

Ursus

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Comments

spickermann · Accepted Answer · 2017-08-06 17:49:42Z

3

Just use the "normal" array syntax:

['This is string 0', 'This is string 1', 'This is string 2', 'This is string 3'].each_with_index do |element, index|
  puts ("%-4s + #{index}" % element)    
end

This is string 0 + 0
This is string 1 + 1
This is string 2 + 2
This is string 3 + 3

answered Aug 6, 2017 at 17:49

spickermann

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