Check whether a string contains one of multiple substrings

Question

I\'ve got a long string-variable and want to find out whether it contains one of two substrings.

e.g.

haystack = \'this one is pretty long\'
needle1          


        

Answer 1

For an array of substrings to search for I'd recommend

needles = ["whatever", "pretty"]

if haystack.match(Regexp.union(needles))
  ...
end

Answer 2

To check if contains at least one of two substrings:

haystack[/whatever|pretty/]

Returns first result found

Answer 3

(haystack.split & [needle1, needle2]).any?

To use comma as separator: split(',')

Answer 4

[needle1, needle2].any? { |needle| haystack.include? needle }

Answer 5

In Ruby >= 2.4 you can do a regex match using | (or):

haystack.match? /whatever|pretty|something/

Or if your strings are in an array:

haystack.match? Regexp.union(strings)

(For Ruby < 2.4, use .match without question mark.)

Answer 6

Try parens in the expression:

 haystack.include?(needle1) || haystack.include?(needle2)