E3003

init 与 main 函数不得有参数列表或返回类型。

备注

The case of fn main() -> Unit is exceptionally accepted and can be corrected by the formatter.

错误示例

///|
/// `init` function must have no arguments and no return value.
fn init() -> Unit {
   
}

///|
/// Error: Unused parameter list for the main function.
fn main() {
  println("Hello, world!")
}

建议

删除参数列表和返回类型注释，如：

///|
fn init {

}

///|
fn main {
  println("Hello, world!")
}