Expand OptionFlatten's iterator methods#153097
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If someone considers moving from `option.into_iter().flatten()` to `option.into_flat_iter()`, it may be important for performance that this iterator "specializes" methods the same way `Flatten` does, especially forwarding to underlying `fold`, etc.
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r? @scottmcm rustbot has assigned @scottmcm. Use Why was this reviewer chosen?The reviewer was selected based on:
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PS: I think this could also implement the |
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r? @the8472 |
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@the8472 gentle ping, before I reroll... |
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@rustbot reroll |
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…oboet Expand `OptionFlatten`'s iterator methods If someone considers moving from `option.into_iter().flatten()` to `option.into_flat_iter()`, it may be important for performance that this iterator "specializes" methods the same way `Flatten` does, especially forwarding to underlying `fold`, etc.
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…uwer Rollup of 10 pull requests Successful merges: - #158502 (Revert "LLVM 23: Adapt codegen test to moved assume") - #152225 (Add supertrait item shadowing for type-level path resolution) - #158194 (Adds RmetaLinkCache a per-link cache that uses path as the key of dec…) - #158466 (rustdoc: show impl Trait<Box<Local>> for Foreign, etc on Local's docs) - #158501 (miri subtree update) - #153097 (Expand `OptionFlatten`'s iterator methods) - #158163 (Fix too-short variance slice in `variances_of` cycle recovery) - #158233 (Allow the unstable attribute on foreign type) - #158470 (Upgrade `jsonsocck` and `jsondoclint` to edition 2024.) - #158488 (Upgrade `rustdoc-json-types` to 2024 edition.)
rust-bors Bot
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Jun 27, 2026
…uwer Rollup of 10 pull requests Successful merges: - #158502 (Revert "LLVM 23: Adapt codegen test to moved assume") - #152225 (Add supertrait item shadowing for type-level path resolution) - #158194 (Adds RmetaLinkCache a per-link cache that uses path as the key of dec…) - #158466 (rustdoc: show impl Trait<Box<Local>> for Foreign, etc on Local's docs) - #158501 (miri subtree update) - #153097 (Expand `OptionFlatten`'s iterator methods) - #158163 (Fix too-short variance slice in `variances_of` cycle recovery) - #158233 (Allow the unstable attribute on foreign type) - #158470 (Upgrade `jsonsocck` and `jsondoclint` to edition 2024.) - #158488 (Upgrade `rustdoc-json-types` to 2024 edition.)
rust-bors Bot
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Jun 27, 2026
…uwer Rollup of 10 pull requests Successful merges: - #158502 (Revert "LLVM 23: Adapt codegen test to moved assume") - #152225 (Add supertrait item shadowing for type-level path resolution) - #158194 (Adds RmetaLinkCache a per-link cache that uses path as the key of dec…) - #158466 (rustdoc: show impl Trait<Box<Local>> for Foreign, etc on Local's docs) - #158501 (miri subtree update) - #153097 (Expand `OptionFlatten`'s iterator methods) - #158163 (Fix too-short variance slice in `variances_of` cycle recovery) - #158233 (Allow the unstable attribute on foreign type) - #158470 (Upgrade `jsonsocck` and `jsondoclint` to edition 2024.) - #158488 (Upgrade `rustdoc-json-types` to 2024 edition.)
rust-bors Bot
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Jun 27, 2026
…uwer Rollup of 10 pull requests Successful merges: - #158502 (Revert "LLVM 23: Adapt codegen test to moved assume") - #152225 (Add supertrait item shadowing for type-level path resolution) - #158194 (Adds RmetaLinkCache a per-link cache that uses path as the key of dec…) - #158466 (rustdoc: show impl Trait<Box<Local>> for Foreign, etc on Local's docs) - #158501 (miri subtree update) - #153097 (Expand `OptionFlatten`'s iterator methods) - #158163 (Fix too-short variance slice in `variances_of` cycle recovery) - #158233 (Allow the unstable attribute on foreign type) - #158470 (Upgrade `jsonsocck` and `jsondoclint` to edition 2024.) - #158488 (Upgrade `rustdoc-json-types` to 2024 edition.)
jhpratt
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…oboet Expand `OptionFlatten`'s iterator methods If someone considers moving from `option.into_iter().flatten()` to `option.into_flat_iter()`, it may be important for performance that this iterator "specializes" methods the same way `Flatten` does, especially forwarding to underlying `fold`, etc.
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If someone considers moving from
option.into_iter().flatten()tooption.into_flat_iter(), it may be important for performance that thisiterator "specializes" methods the same way
Flattendoes, especiallyforwarding to underlying
fold, etc.