How deeply does Refactoring to Rust cover import alias?

Explains local imports, `pub use`, re-exports, module hierarchy, and visibility, but stops short of broader aliasing forms.

Import alias

As explained in Refactoring to Rust

An import alias is an alternate local name assigned to an imported Rust item or path.

An import alias gives an imported Rust item or path a shorter local name. Using `pub use` also re-exports the item, creating a public-facing name at the crate root. section 5.2.2 section 5.2.1

Shortening a nested type path

Replace repeated `crate::day_kind::DayKind` imports with a root alias: `pub use crate::day_kind::DayKind;` Other modules can then write `use crate::DayKind;`. Both names refer to the same item, but the second path is shorter.

Re-exports can hide a module hierarchy from users of a library. A deeply nested function can be exposed through a short path, while implementation modules remain private or crate-visible. section 5.2.2

How Refactoring to Rust covers it

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Also explained in

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Python Workout: 50 ten-minute exercisesA module alias is an alternate name bound to an imported module by an import statement using as.
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Elixir in Action, Third EditionAn alias is an Elixir directive that binds an alternate name to a module for use in references.

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Related concepts

namespace collisionaddresses · A namespace collision occurs when distinct software entities use the same identifier within a shared naming scope, causing ambiguity or conflict.
moduleuses · A module is a distinct, bounded software unit that groups related code or functionality and provides an organizational or interaction boundary within a larger system.
alias tableconfigures · An alias table is a namespace-associated mapping from aliases to the namespaces they designate.
atomkind of · An atom is an Elixir named constant whose text is stored in the runtime atom table and whose value is a reference to that text.
import statementconfigures · An import statement is a source-code declaration that makes names or definitions from another module, package, or namespace available in the current scope.

This explainer was generated by Manning's knowledge graph from the text of Refactoring to Rust. The section links point to the parts of the book it draws on.