| $ cargo run |
| Compiling iterators v0.1.0 (file:///projects/iterators) |
| warning: unused `Map` that must be used |
| --> src/main.rs:4:5 |
| | |
| 4 | v1.iter().map(|x| x + 1); |
| | ^^^^^^^^^^^^^^^^^^^^^^^^ |
| | |
| = note: iterators are lazy and do nothing unless consumed |
| = note: `#[warn(unused_must_use)]` on by default |
| help: use `let _ = ...` to ignore the resulting value |
| | |
| 4 | let _ = v1.iter().map(|x| x + 1); |
| | +++++++ |
| |
| warning: `iterators` (bin "iterators") generated 1 warning |
| Finished dev [unoptimized + debuginfo] target(s) in 0.47s |
| Running `target/debug/iterators` |
