1 error[E0618]: expected function, found `{float}`
2 --> $DIR/issue-45965.rs:12:30
4 LL | let a = |r: f64| if r != 0.0(r != 0.0) { 1.0 } else { 0.0 };
5 | ^^^^^^^^^^^^^ not a function
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0618`.