Use String#end_with?() but ignore case

Question

How to determine if string ends with another string regardless of its case?

filename.end_with?(*%w(.ext1 .e2 .extension))

This example only matches if the case matches too. How to match regardless of the case?

Answer 1

Change filename to lowercase and compare with lowercase extensions.

filename.downcase.end_with?(*%w(.ext1 .e2 .extension))

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'MAIN.RB'.downcase.end_with?(*%w(.ruby .rb)) # => true