include_str in core - Rust
Description: Includes a UTF-8 encoded file as a string.

# Macro include_str

1.6.0 · Source

    macro_rules! include_str {
        ($file:expr $(,)?) => { ... };
    }

Expand description

Includes a UTF-8 encoded file as a string.

The file is located relative to the current file (similarly to how modules are found). The provided path is interpreted in a platform-specific way at compile time. So, for instance, an invocation with a Windows path containing backslashes `\` would not compile correctly on Unix.

This macro will yield an expression of type `&'static str` which is the contents of the file.

## §Examples

Assume there are two files in the same directory with the following contents:

File ‘spanish.in’:

    adiós

File ‘main.rs’:

ⓘ

    fn main() {
        let my_str = include_str!("spanish.in");
        assert_eq!(my_str, "adiós\n");
        print!("{my_str}");
    }

Compiling ‘main.rs’ and running the resulting binary will print “adiós”.