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[SR-12264] Arrays don't create themselves quickly from sequences that can provide contiguous storage #54692

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Lukasa opened this issue Feb 24, 2020 · 2 comments
Open

[SR-12264] Arrays don't create themselves quickly from sequences that can provide contiguous storage #54692

Lukasa opened this issue Feb 24, 2020 · 2 comments
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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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@Lukasa
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Lukasa commented Feb 24, 2020

Previous ID SR-12264
Radar rdar://problem/59724714
Original Reporter @Lukasa
Type Bug
Environment

Apple Swift version 5.2 (swiftlang-1103.0.25.1 clang-1103.2.32.5)
Target: x86_64-apple-darwin19.4.0

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

md5: b871d8aedb40805887ee96b26cf7c2f2

Issue Description:

If I have a sequence that can provide contiguous storage, Array should be able to create itself quickly by using that storage pointer and just copying the elements over. Right now, Array just copies by iterating the iterator. This can be a lot slower when the iterator isn't inlinable.
@Lukasa
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Lukasa commented Feb 24, 2020

@swift-ci create

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Comment by Jacob Mao (JIRA)

Can I take 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. standard library Area: Standard library umbrella
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@Lukasa @swift-ci