ruby / ruby/rbs

Syntax to bound generics of self in method

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#2,191 0 comments 2 reactions 0 assignees View on GitHub

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Dominant language
Ruby
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Forks
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Avg merge
6d 17h
Merged PRs (30d)
37

Description

It would be nice if it's possible to bound generics of self.

Example usecase:

class Array[Elem]
  def sort: [Elem < Comparable] () -> ::Array[Elem]
          | [Elem < Comparable]  () { (Elem a, Elem b) -> ::Integer } -> ::Array[Elem]
end

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First steps

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Research direction

No file, test, or entry point is named. Start by tracing how RBS parses method signatures and generic bounds, then establish tests for the shown Array#sort forms and their accepted syntax. Done means the proposed bounds on self are specified and consistently supported.

Written by the indexing model from the issue text.

Assessment

Tech stack
ruby
Domain
tooling
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
30/100

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