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[SR-6695] methods/computed properties defined in Swift not seen by Objective-C runtime in Swift 4.0 #49244

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swift-ci opened this issue Jan 4, 2018 · 1 comment
Closed

[SR-6695] methods/computed properties defined in Swift not seen by Objective-C runtime in Swift 4.0 #49244

swift-ci opened this issue Jan 4, 2018 · 1 comment
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. standard library Area: Standard library umbrella

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@swift-ci
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swift-ci commented Jan 4, 2018

Previous ID SR-6695
Radar None
Original Reporter Nicolas Buquet (JIRA User)
Type Bug
Status Resolved
Resolution Invalid
Environment

Xcode 9.2

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

md5: b27261015ab7ffbd296a40b00cfde702

Issue Description:

Example:

In Objective-C file:

NSLog(@"UIColor respondsToSelector 'red': %@", [UIColor respondsToSelector:@selector(red)] ? @"YES" : @"NO");

prints YES when the project is compiled for Swift 3.2

prints NO when the project is compiled for Swift 4.0
@belkadan
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belkadan commented Jan 5, 2018

That's correct. See SE-0160 for a description of why this behavior was changed. (We never meant to be adding Objective-C methods to UIColor, but you can add them back if you really want them.)

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. standard library Area: Standard library umbrella
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@belkadan @swift-ci