On 18 September 2014 03:08, Richard A. O'Keefe <ok@cs.otago.ac.nz> wrote:

The question question is "what do you MEAN by 'are they distinct'"?

They are two distinct references to a single binding occurrence
of an identifier. In Eq1, the first occurrence is in a pattern,
and the second is in an expression.

Thanks for the feedback.
If both occurrences of (NewGlass i) in Eq1 reference the same object in memory then I would consider them to be the same.

If they reference different objects I would consider them to be equal but not the same.

Is (Fill m i ) in Eq 2 a type constructor? Is it treated the same as the data constructor (NewGlass i)?

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