CODEWITHSUNDEEP
ruby
Nowandthen98
Nowandthen98

Reputation: 300

Ruby - Evaluation within string

I have a loop, and in it want to assign a string to the value of i + (i-1) but am not sure how to progress.

(1..50).each do |i|
   answer = "#{i+(i-1)}"
end

In this code the answer must be a string as it will eventually relate to a database table.

What is the best way of evaluating this within the string, I have tried a few variations of this but haven't had any luck so any helpful pointers would be much appreciated.

Upvotes: 0

Views: 84

Answers (1)

Jan
Jan

Reputation: 11

Maybe something like this?

(1..50).map{|i| i + (i-1)}.map(&:to_s)

Map will take Rage and perform addition written in block on each element and then return transformed Array(Array and Range are enumerable types) which we pass once more to map and &:to_s is ruby's syntactic sugar that turns to_s into a block that can be passed to map. It is equal to .map {|i| i.to_s}

Upvotes: 1

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