Have you come across the following error error: missing type for const item in Rust? Chances are, you defined a constant value like this:
const MY_CONSTANT_VALUE = 1; // this will generate errors at compile time
static ANOTHER_VALUE = 1; // this will generate errors at compile timeAt first, this doesn’t seem to be an error as Rust is capable of implicitly determine the data type of other non-constant scoped variables (let ) like the one you see in the following example:
fn main() {
let my_value = 1; // Rust will implicitly determine the data type of my_value as i32
}To fix error: missing type for const item you must explicitly define the data type of a constant and static value in Rust.
Constants must be explicitly typed.
Rust Documentation: Constant items
Hence, to solve the previous error from the previous snippet of code, we explicitly define the constant variable MY_CONSTANT_VALUE with the data type i32.
const MY_CONSTANT_VALUE: i32 = 1;
static ANOTHER_VALUE: i32 = 1;Did this article help you fix the error?
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