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Ruby: Until loop doesn't work as expected

I just wrote this simple script:

#!/bin/env ruby

begin
    print "Continue? [Y/n] "
    key = gets
end until key == 'n'

I expect that if I hit "n" key, the loop will end. But that's not happening. No matter what key I send, loop always continue: 直到循环问题

What am I doing wrong?

gets also captures the ENTER you press after the n .

Try key = gets.chomp instead (see the explanation here: http://ruby-doc.org/docs/Tutorial/part_02/user_input.html#newline ).

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