racket / racket/rhombus

Easy way to define wrappers

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Dominant language
Racket
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601
Forks
74
Avg merge
2d 10h
Merged PRs (30d)
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Description

One often needs to define wrappers around existing functions, passing some of the same default arguments, either positional or keyword based. For example, if one wants to define a curried version of dict-ref, one has to redefine the default argument for failure:

(define ((curried-dict-ref key [default <failure-result-tbd>]) a-dict)
  (dict-ref a-dict key default))

Not only is this cumbersome, error-prone and against DRY, but the docs are actually not helpful to define the correct default value.

Hence I would very much like in Rhombus a global mechanism for easily defining wrappers around existing functions with default arguments.

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Research direction

The issue provides no implementation files, tests, or entry points. Start by reviewing the curried dict-ref example and the linked dict-ref documentation, then determine the intended wrapper mechanism and its scope; done requires an agreed design and corresponding implementation and tests.

Written by the indexing model from the issue text.

Assessment

Domain
compilers
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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