Seeing numbers in Ruby with r attached to the number -

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when come across numbers in ruby code, mean?

1r

or

1.0r

tested in ruby 1.8.6 2.0.0 , fails. this:

>> 1r syntaxerror: unexpected tidentifier, expecting end-of-input

and 

>> 1.0r syntaxerror: unexpected tidentifier, expecting end-of-input

probably downvoted not searching, or something, or not enough examples. clarifies. ruby code, doesn't have anywhere, has there.

that new feature decimal/rational literals in ruby 2.1. see here: http://rkh.im/ruby-2.1 (search "decimal literals")

0.1r      #=> (1/10) 0.1r * 3  #=> (3/10)

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