Determining if an array of strings contains a certain substring in ruby

Question

I have a simple ruby question. I have an array of strings. I'd like to determine if that array contains a substring of any of the strings. As an example

a = ['cat','dog','elephant'] a.to_s.include?('ele') 

Is this the best way to do it?

Thanks.

Answer 1

a.any? should do the job.

> a = ['cat','dog','elephant'] => ["cat", "dog", "elephant"] > a.any? { |s| s.include?('ele') } => true > a.any? { |s| s.include?('nope') } => false 

Answer 2

Here is one more way: if you want to get that affected string element.

>  a = ['cat','dog','elephant'] => ["cat", "dog", "elephant"] > a.grep(/ele/) => ["elephant"] 

if you just want Boolean value only.

> a.grep(/ele/).empty? => false # it return false due to value is present 

Hope this is helpful.