swiftlang/swift

[SR-11805] Revisit Eager Bridging for the Hashed Collections

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#54,216 opened on Nov 19, 2019

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good first issueimprovementstandard library

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Description
Previous ID SR-11805
Radar rdar://problem/57348898
Original Reporter @CodaFi
Type Improvement
Votes 0
Component/s Standard Library
Labels Improvement, StarterBug
Assignee None
Priority Medium

md5: 6107dcaf61168c23a89414ef63c35f48

Issue Description:

We had an active effort a few years ago to look into eager bridging for the hashed collections. That effort has unfortunately fizzled out due to age and neglect, but there are parts of it that may be salvageable in the current iteration of the standard library. An old reference implementation can be found at https://github.com/apple/swift/pull/5703, but that is now bitrotted. The general approach is still worthwhile, though, and we should try to update it and benchmark it again.

Who knows, there might finally be some real wins.

Contributor guide

Research direction
Examine the old reference implementation from the given PR link, update it to work with the current standard library, and benchmark the before/after performance to identify possible wins.
Tech stack
swift
Domain
compilersperformance
Issue type
Performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
SwiftGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
85