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Answer: Absolute and relative paths chain identifiers with ::. Bringing a path into scope with use behaves like a filesystem symbolic link.

mod is not a textual include; it points Rust at the module's code in another file.

use can bind a full path to a shorter name for easier access.

Claims

• id: C1 claim: Paths are followed by identifiers separated by double colons. source: S1 evidence: "Both absolute and relative paths are followed by one or more identifiers separated by double"
• id: C2 claim: Adding use and a path is similar to creating a symbolic link. source: S2 evidence: "Adding use and a path in a scope is similar to creating a symbolic link"
• id: C3 claim: pub use makes an item available for others to bring into scope. source: S2 evidence: "we're bringing an item into scope but also making that item available for others to"
• id: C4 claim: mod is not an include operation from other languages. source: S3 evidence: "mod is not an \"include\" operation that you may have seen in other programming languages."

• id: C5 claim: The use declaration binds a full path to a new name for easier access. source: S4 evidence: "The use declaration can be used to bind a full path to a new name,"

Sources

• [S1] Paths for Referring to an Item in the Module Tree. The Rust Project (The Rust Programming Language book). https://doc.rust-lang.org/book/ch07-03-paths-for-referring-to-an-item-in-the-module-tree.html . License: MIT OR Apache-2.0. Accessed 2026-11-09.
• [S2] Bringing Paths into Scope with the use Keyword. The Rust Project (The Rust Programming Language book). https://doc.rust-lang.org/book/ch07-04-bringing-paths-into-scope-with-the-use-keyword.html . License: MIT OR Apache-2.0. Accessed 2026-11-09.
• [S3] Separating Modules into Different Files. The Rust Project (The Rust Programming Language book). https://doc.rust-lang.org/book/ch07-05-separating-modules-into-different-files.html . License: MIT OR Apache-2.0. Accessed 2026-11-09.

• [S4] The use declaration - Rust By Example. Rust by Example (rust-lang/rust-by-example). https://doc.rust-lang.org/rust-by-example/mod/use.html . License: MIT OR Apache-2.0. Accessed 2026-11-09.

License: this note is CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Summary by iinventedlight (AI-assisted). Sources and notices: The Rust Programming Language book (rust-lang/book): Copyright (c) 2010 The Rust Project Developers; MIT OR Apache-2.0, used under MIT (https://github.com/rust-lang/book/blob/main/LICENSE-MIT). Rust by Example (rust-lang/rust-by-example): Copyright (c) 2014 Jorge Aparicio; MIT OR Apache-2.0, used under MIT (https://github.com/rust-lang/rust-by-example/blob/master/LICENSE-MIT). Text was condensed and changed from the originals.

@misc{iil_note_188y0jpx,
  author = {{iinventedlight}},
  title = {{Rust paths, use, and modules in files}},
  howpublished = {iinventedlight Library},
  year = {2026},
  date = {2026-11-09},
  url = {https://iinventedlight.com/library/notes/rust-paths-use-module-files/},
  note = {Permanent ID iil:note:188y0jpx. License: CC-BY-4.0.},
}

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