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[SR-3172] Set<AnyHashable> isn't bridging to NSNumber correctly #45760

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ChristopherRogers opened this issue Nov 10, 2016 · 6 comments
Closed

[SR-3172] Set<AnyHashable> isn't bridging to NSNumber correctly #45760

ChristopherRogers opened this issue Nov 10, 2016 · 6 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. SDKOverlay standard library Area: Standard library umbrella

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@ChristopherRogers
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Previous ID SR-3172
Radar rdar://problem/29026017
Original Reporter @ChristopherRogers
Type Bug
Status Closed
Resolution Done
Environment

Xcode 8.1, Swift 3.0.1
Xcode 8.1, Development Snapshot 2016-11-09

Additional Detail from JIRA
Votes 0
Component/s Standard Library
Labels Bug, SDKOverlay
Assignee None
Priority Medium

md5: 7c87927e15a61fb97e3113802a6eade2

Issue Description:

All of these statements except the last evaluate to true. I believe it should be true as well. This affects Swift to Objective-C bridging where the Objective-C code isn't using lightweight generics.

([42] as Array as NSArray).contains(42)
([42] as Array as NSArray).contains(NSNumber(value: 42))
([42] as Array<AnyHashable> as NSArray).contains(42)
([42] as Array<AnyHashable> as NSArray).contains(NSNumber(value: 42))
([42] as Set as NSSet).contains(42)
([42] as Set as NSSet).contains(NSNumber(value: 42))
([42] as Set<AnyHashable> as NSSet).contains(42)
([42] as Set<AnyHashable> as NSSet).contains(NSNumber(value: 42)) // false
@belkadan
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cc @jckarter, @DougGregor

@jckarter
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Yeah, we don't properly handle "pure" NSNumbers from Cocoa, since they don't have a definitive Swift type to hash and equate like (rdar://problem/29026017).

@DougGregor
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Huh. Still fails with master; @jckarter, is this still a known gap in our `AnyHashable` story for `NSNumber`?

@jckarter
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Yes, I emailed swift-dev about this a couple weeks ago:

https://lists.swift.org/pipermail/swift-dev/Week-of-Mon-20161031/003401.html

@ChristopherRogers
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NSNumber(value: 42) as AnyHashable == 42 as AnyHashable now returns true for me in Swift 3.2 & 4.0.

@jckarter
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Yeah, looks like @phausler's changes to NSNumber bridging addressed this.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. SDKOverlay standard library Area: Standard library umbrella
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4 participants
@ChristopherRogers @jckarter @belkadan @DougGregor