error[E0282]: type annotations needed | |
--> $DIR/type-annotations-needed-expr.rs:2:39 | |
| | |
LL | let _ = (vec![1,2,3]).into_iter().sum() as f64; | |
| ^^^ | |
| | | |
| cannot infer type for type parameter `S` | |
| help: consider specifying the type argument in the method call: `sum::<S>` | |
| | |
= note: type must be known at this point | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0282`. |