An identifier that is neither defined nor a struct was used.
Erroneous code example:
fn main () {
let x = Foo { x: 1, y: 2 };
}
RunIn this case, Foo
is undefined, so it inherently isn’t anything, and
definitely not a struct.
fn main () {
let foo = 1;
let x = foo { x: 1, y: 2 };
}
RunIn this case, foo
is defined, but is not a struct, so Rust can’t use it as
one.