Fix E0228: Type Mismatch in Function Arguments

Fri, 08 May 2026 19:56:04 +0800

1. Symptoms

The Rust compiler emits error E0228 when it encounters a type mismatch between expected function parameters and provided arguments. This error manifests in several common scenarios that developers encounter during compilation.

Error Message Display

When E0228 is triggered, the compiler produces output similar to:

error[E0228]: no implementation for type {integer} == &str –> src/main.rs:10:5 | 10 | compare(42, “hello”); | ^^^^^^^ expected i32, found &str


Another common presentation:

error[E0228]: the type definitions in the impl for the given type have different number of lifetimes than the type definition –> src/lib.rs:45:12 | 45 | instance.method::<‘a, ‘b>(&value); | ^^^^^^^^^^^^^^^^ lifetime mismatch

E0228 on ErrorVault — Developer Error Code Dictionary

Fix E0228: Type Mismatch in Function Arguments

1. Symptoms

Error Message Display

When E0228 is triggered, the compiler produces output similar to: