ref-cast 1.0.25

Safely cast &T to &U where the struct U contains a single field of type T.
Documentation 
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use ref_cast::ref_cast_custom;
use ref_cast_test_suite::Struct;

#[ref_cast_custom]
fn ref_cast(s: &str) -> &Struct;

#[ref_cast_custom]
fn ref_cast_mut(s: &mut str) -> &mut Struct;

fn main() {}