[Python-Dev] Adding NewType() to PEP 484
Guido van Rossum
gvanrossum at gmail.com
Sun May 29 19:55:50 EDT 2016
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Sun May 29 19:55:50 EDT 2016
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On Sun, May 29, 2016 at 4:08 PM, Oscar Benjamin <oscar.j.benjamin at gmail.com> wrote: > > On 28 May 2016 00:03, "Guido van Rossum" <gvanrossum at gmail.com> wrote: >> >> Also -- the most important thing. :-) What to call these things? We're >> pretty much settled on the semantics and how to create them (A = >> NewType('A', int)) but what should we call types like A when we're >> talking about them? "New types" sounds awkward. > > How about "nominal type" since the type is distinct only in name? I believe that would be confusing because nominal type systems are a different idea (https://en.wikipedia.org/wiki/Nominal_type_system). -- --Guido van Rossum (python.org/~guido)
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