clone: managed boxes need to clone by shallow copy #5763
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@nikomatsakis: r? I had to fix a broken test, and added some docstrings |
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This should not have the trait bound. There's no need to T to implement Clone if the copy is shallow. |
Performing a deep copy isn't ever desired for a persistent data structure, and it requires a more complex implementation to do correctly. A deep copy needs to check for cycles to avoid an infinite loop.
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@metajack: good point, fixed |
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Performing a deep copy isn't ever desired for a persistent data structure, and it requires a more complex implementation to do correctly. A deep copy needs to check for cycles to avoid an infinite loop.
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…e `'b:'a`, meaning `'b outlives 'a`. Syntax currently does nothing but is needed for full fix to rust-lang#5763. To use this syntax, the issue_5763_bootstrap feature guard is required.
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…kfelix Introduce syntax for lifetime bounds like `'b:'a`, meaning `'b outlives 'a`. Syntax currently does nothing but is needed for full fix to #5763. To use this syntax, the issue_5763_bootstrap feature guard is required.
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Rustup changelog: none
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Performing a deep copy isn't ever desired for a persistent data
structure, and it requires a more complex implementation to do
correctly. A deep copy needs to check for cycles to avoid an infinite
loop.