error[E0308]: if and else have incompatible types --> $DIR/str-array-assignment.rs:3:37 | LL | let t = if true { s[..2] } else { s }; | ------ ^ expected str, found &str | | | expected because of this | = note: expected type `str` found type `&str` error[E0308]: mismatched types --> $DIR/str-array-assignment.rs:5:27 | LL | let u: &str = if true { s[..2] } else { s }; | ^^^^^^ | | | expected &str, found str | help: consider borrowing here: `&s[..2]` | = note: expected type `&str` found type `str` error[E0277]: the size for values of type `str` cannot be known at compilation time --> $DIR/str-array-assignment.rs:7:7 | LL | let v = s[..2]; | ^ ------ help: consider borrowing here: `&s[..2]` | | | doesn't have a size known at compile-time | = help: the trait `std::marker::Sized` is not implemented for `str` = note: to learn more, visit = note: all local variables must have a statically known size = help: unsized locals are gated as an unstable feature error[E0308]: mismatched types --> $DIR/str-array-assignment.rs:9:17 | LL | let w: &str = s[..2]; | ^^^^^^ | | | expected &str, found str | help: consider borrowing here: `&s[..2]` | = note: expected type `&str` found type `str` error: aborting due to 4 previous errors Some errors have detailed explanations: E0277, E0308. For more information about an error, try `rustc --explain E0277`.