rust常用小工具 tools

get_variable_type.rs

/// rust tools
fn main() {
  get_variable_type();
}

///get any variable type
fn get_variable_type() {
  
  //expected (), found reference
  let v: () = "hello world";
  
  //expected (), found struct `std::string::String`
  let v2: () = "hello world".to_string();
  
  //expected (), found &str
  let x = "Hello world";
  let v3: () = x;
  
  //expected (), found &&str
  let y = "Hello world";
  let v4: () = &y;
}