std::line!
[−]
[src]
macro_rules! line { () => ({ /* compiler built-in */ }) }
A macro which expands to the line number on which it was invoked.
The expanded expression has type usize
`usize, and the returned line is not the invocation of the
`, and the returned line is not
the invocation of the line!()
`line!()macro itself, but rather the first macro invocation leading up to the invocation of the
` macro itself, but rather the first macro
invocation leading up to the invocation of the line!()
`line!()` macro.
Examples
fn main() { let current_line = line!(); println!("defined on line: {}", current_line); }let current_line = line!(); println!("defined on line: {}", current_line);