How to see if a string ends with one of multiple characters

Question

I have this statement:

string_tokens[-1].ends_with?(",") || string_tokens[-1].ends_with?("-") || string_tokens[-1].ends_with?("&")

I would like to put all the tokens (",", "-", "&") into a constant and simplify the above to ask, "does the string end with any of these characters", but I'm not sure how to do that.

Answer 1

Yes.

CONST = %w|, - &|.freeze
string_tokens[-1].end_with?(*CONST)

Usage:

'test,'.end_with?(*CONST)
#=> true
'test&'.end_with?(*CONST)
#=> true
'test-'.end_with?(*CONST)
#=> true

You use * (splat operator) to pass multiple args to the String#end_with?, because it accepts multiple.