Macro std::const_assert

macro const_assert($cond) { ... }

source

Aborts the compilation if cond evaluates to false during compilation.

cond must be a constant expression.

Examples

use std::const_assert;
use std::mem::size_of;

// Check we are not compiling for a 16-bit system
const_assert!(size_of::<usize>() > 2);
Run this example
use std::const_assert;
use std::mem::size_of;

const_assert!(size_of::<i32>() < size_of::<i16>()); // fails to compile
Run this example