Macro ostd::offset_of

source ยท 
macro_rules! offset_of {
    ($container:ty, $($field:tt)+) => { ... };
}
Expand description

Gets the offset of a field within a type as a pointer.

#[repr(C)]
pub struct Foo {
    first: u8,
    second: u32,
}

assert!(offset_of(Foo, first) == (0 as *const u8));
assert!(offset_of(Foo, second) == (4 as *const u32));