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Title: Blame Tracking and Type Error Debugging
In this work, we present an unexpected connection between gradual typing and type error debugging. Namely, we illustrate that gradual typing provides a natural way to defer type errors in statically ill-typed programs, providing more feedback than traditional approaches to deferring type errors. When evaluating expressions that lead to runtime type errors, the usefulness of the feedback depends on blame tracking, the defacto approach to locating the cause of such runtime type errors. Unfortunately, blame tracking suffers from the bias problem for type error localization in languages with type inference. We illustrate and formalize the bias problem for blame tracking, present ideas for adapting existing type error debugging techniques to combat this bias, and outline further challenges.  more » « less
Award ID(s):
1750886
PAR ID:
10134367
Author(s) / Creator(s):
;
Date Published:
Journal Name:
Leibniz international proceedings in informatics
Volume:
136
ISSN:
1868-8969
Page Range / eLocation ID:
2:1--2:14
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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