On Sunday, May 27, ToddAndMargo wrote: 
> Why do I sometime see a range written `0..1000`
> and `0...1000` (three dots)?

Two dots makes a Range.  Three dots is the
sequence operator -- it makes a Seq.

        ~ $ perl6 -e 'say (0..1000).^name'
        Range
        ~ $ perl6 -e 'say (0...1000).^name'
        Seq

Brian

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