Attempted to call something which isn't a function nor a method.
Erroneous code examples:
enum X { Entry, } X::Entry(); // error: expected function, tuple struct or tuple variant, // found `X::Entry` // Or even simpler: let x = 0i32; x(); // error: expected function, tuple struct or tuple variant, found `i32`
Only functions and methods can be called using ()
. Example:
// We declare a function: fn i_am_a_function() {} // And we call it: i_am_a_function();