std::file - Rust
Description: API documentation for the Rust `file` macro in crate `std`.
Keywords: rust, rustlang, rust-lang, file

# Macro std::file 1.0.0 [−] [src]

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

A macro which expands to the file name from which it was invoked.

The expanded expression has type `&'static str`, and the returned file is not the invocation of the `file!()` macro itself, but rather the first macro invocation leading up to the invocation of the `file!()` macro.

# Examples

    let this_file = file!();
    println!("defined in file: {}", this_file);Run

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