racket / racket/typed-racket

overly lenient input type for take, drop, split-at, take-right, drop-right, split-at-right

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Dominant language
Racket
Stars
575
Forks
106
Avg merge
2h 1m
Merged PRs (30d)
2

Description

In TR, all these functions take an Integer argument. In Racket, however, these arguments are limited to exact-nonnegative-integer?. So the TR types can be tightened to either Nonnegative-Integer or I assume Index (since they pertain to list indexes).

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Research direction

Locate the Typed Racket definitions for take, drop, split-at, take-right, drop-right, and split-at-right, then compare their argument types with Racket's exact-nonnegative-integer? requirement. The work is done when these functions accept the intended nonnegative integer type rather than Integer.

Written by the indexing model from the issue text.

Assessment

Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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