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Correl Roush 2020-10-10 20:13:31 -04:00
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20201007142751-python_typing.org
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Python does not require nor enforce strict typing, and instead takes a dynamic Python does not require nor enforce strict typing, and instead takes a dynamic
approach using [[file:20201008164244-duck_typing.org][Duck Typing]]. approach using [[file:20201008164244-duck_typing.org][Duck Typing]].
Optional [[file:20201009010321-static_type_checking.org][Static Type Checking]] support for Python is provided via type hints as [[file:20201010185815-gradual_typing.org][Gradual Typing]] support for Python is provided via type hints as described in
described in [[pep:0484][PEP-484]] (which covers [[file:20201009010657-nominal_typing.org][Nominal Typing]]) and expanded upon in [[pep:0544][PEP-544]] [[pep:0484][PEP-484]] (which covers [[file:20201009010657-nominal_typing.org][Nominal Typing]]) and expanded upon in [[pep:0544][PEP-544]] (which covers
(which covers [[file:20201008164835-structural_typing.org][Structural Typing]]). [[file:20201008164835-structural_typing.org][Structural Typing]]).
Variables, function arguments, and return values can have their types annotated, Variables, function arguments, and return values can have their types annotated,
e.g. "variable x has type integer" or "function y takes a string and returns a e.g. "variable x has type integer" or "function y takes a string and returns a
@ -26,6 +26,7 @@ program correctness.
* Fun facts * Fun facts
- Per [[pep:0285][PEP-285]], Python's =boolean= inherits from =int=, hence =True + True = 2=. - Per [[pep:0285][PEP-285]], Python's =boolean= inherits from =int=, hence =True + True = 2=.
* Relevant PEPs * Relevant PEPs
- [[pep:3107][PEP 3107 -- Function Annotations]]
- [[pep:0482][PEP 482 -- Literature Overview for Type Hints]] - [[pep:0482][PEP 482 -- Literature Overview for Type Hints]]
- [[pep:0483][PEP 483 -- The Theory of Type Hints]] - [[pep:0483][PEP 483 -- The Theory of Type Hints]]
- [[pep:0484][PEP 484 -- Type Hints]] - [[pep:0484][PEP 484 -- Type Hints]]

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20201010185815-gradual_typing.org Normal file
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#+title: Gradual Typing
A means of supporting both dynamic and static [[file:20201008164956-type_system.org][Type Systems]] within a language.

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JeremySiek2010.org Normal file
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#+TITLE: What is gradual typing
#+ROAM_KEY: cite:JeremySiek2010
A blog post defining [[file:20201010185815-gradual_typing.org][Gradual Typing]].