Mention that HashMap::new and HashSet::new do not allocate #44609
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r? @dtolnay (rust_highfive has picked a reviewer for you, use r? to override) |
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@bors: r+ rollup thanks a ton! |
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📌 Commit f7e974e has been approved by |
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Mention that HashMap::new and HashSet::new do not allocate The docs for `HashMap::with_capacity` and `HashSet::with_capacity` already say that > If `capacity` is 0, the hash map/set will not allocate. However, the docs for `::new` do not say that the initial capacity is 0, and thus promise that a call to `::new` alone does not allocate. This PR fixes that.
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Mention that HashMap::new and HashSet::new do not allocate The docs for `HashMap::with_capacity` and `HashSet::with_capacity` already say that > If `capacity` is 0, the hash map/set will not allocate. However, the docs for `::new` do not say that the initial capacity is 0, and thus promise that a call to `::new` alone does not allocate. This PR fixes that.
alexcrichton
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Sep 17, 2017
Mention that HashMap::new and HashSet::new do not allocate The docs for `HashMap::with_capacity` and `HashSet::with_capacity` already say that > If `capacity` is 0, the hash map/set will not allocate. However, the docs for `::new` do not say that the initial capacity is 0, and thus promise that a call to `::new` alone does not allocate. This PR fixes that.
bors
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The docs for
HashMap::with_capacityandHashSet::with_capacityalready say thatHowever, the docs for
::newdo not say that the initial capacity is 0, and thus promise that a call to::newalone does not allocate. This PR fixes that.