# Macro std::line 1.0.0 [−] [src]

    macro_rules! line {
        () => { ... };
    }

A macro which expands to the line number on which it was invoked.

The expanded expression has type `u32`, and the returned line is not the invocation of the `line!()` macro itself, but rather the first macro invocation leading up to the invocation of the `line!()` macro.

# Examples

    let current_line = line!();
    println!("defined on line: {}", current_line);Run

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