On Wed, Dec 9, 2020 at 12:05 PM Mathew Elman <mathew.el...@ocado.com> wrote:
> Steven D'Aprano wrote: > > On Tue, Dec 08, 2020 at 11:46:59AM -0000, Mathew Elman wrote: > > > I would like to propose adding lazy types for casting > > > builtins in a > > > lazy fashion. e.g. lazy_tuple which creates a reference to the > > > source iterable and a morally immutable sequence but only populates > > > the tupular container when it or the source is used. > > > What are your use-cases for this? > > Does this include things like lazy_list, lazy_float, > > lazy_bool, > > lazy_str, lazy_bytearray etc? > > I would say yes, it should include these types as well. > The use case is for when you are casting between types a high number of > times to pass them around, especially into another type and back. > > Out of morbid curiosity, why would you need to be casting between iterables many times? Don't most consumers treat iterables roughly equally?
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