Rust errors / Types and traits
Rust compiler error · checked with rustc 1.99.0
Rust error E0415: identifier `f` is bound more than once in this parameter list
What it meansMore than one function parameter have the same name.
What rustc prints
error[E0415]: identifier `f` is bound more than once in this parameter list
--> main.rs:1:16
|
1 | fn foo(f: i32, f: i32) {} // error: identifier `f` is bound more than
| ^ used as parameter more than onceReal output of rustc 1.99.0 compiling the official example below (2021 edition). Your names and line numbers will differ; the first line is the part to match.
E0415Types and traits
Activein rustc 1.99.0
8related errors linked below
The compiler team's explanation
More than one function parameter have the same name.
Erroneous code example:
fn foo(f: i32, f: i32) {} // error: identifier `f` is bound more than
// once in this parameter listPlease verify you didn't misspell parameters' name. Example:
fn foo(f: i32, g: i32) {} // ok!From rustc --explain E0415 (1.99.0), part of the Rust project, MIT or Apache-2.0. Official page.
Related errors
- E0308mismatched types
- E0277the trait bound is not satisfied
- E0599no method named X found in the current scope
- E0433failed to resolve
- E0409variable `y` is bound inconsistently across alternatives separated by `|`
- E0411cannot find type `Self` in this scope
- E0416identifier `x` is bound more than once in the same pattern
- E0422cannot find struct, variant or union type `Foo` in this scope
Up next
Often hit nextE0308: mismatched typesA related error from the same family.Read it next →Did this answer your question?