error[E0061]: this function takes 3 arguments but 4 arguments were supplied --> $DIR/add-tuple-within-arguments.rs:6:5 | LL | foo("hi", 1, 2, "hi"); | ^^^ | note: function defined here --> $DIR/add-tuple-within-arguments.rs:1:4 | LL | fn foo(s: &str, a: (i32, i32), s2: &str) {} | ^^^ ------------- help: wrap these arguments in parentheses to construct a tuple | LL | foo("hi", (1, 2), "hi"); | + + error[E0308]: mismatched types --> $DIR/add-tuple-within-arguments.rs:8:15 | LL | bar("hi", "hi", "hi"); | --- ^^^^ expected tuple, found `&str` | | | arguments to this function are incorrect | = note: expected tuple `(&str,)` found reference `&'static str` note: function defined here --> $DIR/add-tuple-within-arguments.rs:3:4 | LL | fn bar(s: &str, a: (&str,), s2: &str) {} | ^^^ ---------- help: use a trailing comma to create a tuple with one element | LL | bar("hi", ("hi",), "hi"); | + ++ error: aborting due to 2 previous errors Some errors have detailed explanations: E0061, E0308. For more information about an error, try `rustc --explain E0061`.