How can I select the longest string from a Ruby array?

Question

However above [duplicate suggestion] is for multidimensional array, not targeting the simpler case I am posing here.

For example if I have:

'one','two','three','four','five' 

I want to select three as it is the longest string. I tried:

['one','two','three','four','five'].select{|char_num| char_num.size.max}  

but Enumerable#max doesn't return the right result.

Answer 1

Just do as below using Enumerable#max_by :

ar = ['one','two','three','four','five'] ar.max_by(&:length) # => "three" 

Answer 2

arr.map(&:length).max     -