Macro byte_strings::const_cstr

source ·

macro_rules! const_cstr {
    () => { ... };
    (
    $($s:expr),* $(,)?
) => { ... };
}

Expand description

const-friendly version of c_str!.

use ::byte_strings::const_;
use ::core::ffi::CStr;

const MESSAGE: &str = "Hello, World!";
const C_MESSAGE: &CStr = const_::c_str!(MESSAGE);

Inner null bytes are still rejected at compile time:

use ::byte_strings::const_;
use ::core::ffi::CStr;

const MESSAGE: &str = "Hell\0, World!";
const C_MESSAGE: &CStr = const_::c_str!(MESSAGE); // Error.