error duplicate-decl

What it means#

All files of a module share one namespace (§2.1), so two top-level declarations with the same name, in the same file or in different files of the module, conflict. The same applies to two members with one name in a single data, enum or impl. (let bindings are different: they may shadow, §4.1.)

Example#

data User { id: u64 }
data User { name: str }      // <- duplicate-decl

fn main() {}

duplicate-decl

How to fix#

data User { id: u64 }
data UserProfile { name: str }

fn main() {}

Rename one declaration or merge them. Declarations in different modules never conflict.

See also#

• import-conflict
• unresolved-name