A binding shadowed something it shouldn’t.
A match arm or a variable has a name that is already used by something else, e.g.
This error may also happen when an enum variant with fields is used in a pattern, but without its fields.
enum Enum {
WithField(i32)
}
use Enum::*;
match WithField(1) {
WithField => {} // error: missing (_)
}
RunMatch bindings cannot shadow statics:
static TEST: i32 = 0;
let r = 123;
match r {
TEST => {} // error: name of a static
}
RunFixed examples:
static TEST: i32 = 0;
let r = 123;
match r {
some_value => {} // ok!
}
Runor
const TEST: i32 = 0; // const, not static
let r = 123;
match r {
TEST => {} // const is ok!
other_values => {}
}
Run